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215 Cards in this Set
 Front
 Back
What is stats?

the art and science of making sense of data


NAME
this is the art and science of making sense of data 
stats


In stats we use (1) and (2)to extract info from data

methods and procedures


NAME
in this we use differ methods and procedures to extract info from data 
stats


In stats we use differ methods and procedures to extract (1)

info from data


What is the goal of stats?

to make sense of data


NAME
the goal of this is to make sense of data 
stats


T or F
a list of data is a peice of info 
false


is a list of data a peice of info?

no


What is the population?

refers to all the observations under a specfic study


NAME
this refers to all the observations under a specfic study 
population


CASE: a study on all traffic accidents in gainvsille
what is the population? 
all traffic accidents in gainvislle


What is a sample?

refers to part of the population


NAME
this refers to part of the population 
sample


in stats we make (1) about pop using sample info based on incomplte info

descions or inflenece


In stats, we make infelence decision about pop using (2) based (3)

(2)sample info incomplete info


What are (2) types of data?

categorical data (2)numerical data


NAME
there are (2) types categorical and numerical 
data


What is numerical data?

inolves numbers


Catergorical data can also be called (1)

qualatitave data


(1)can also be called qualiatitave data

catergorical


numerical data can also be called (1)

quantative data


(1)data can also be called quantative data

numerical


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
gender 
catergorical


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
types of relgions 
catergorical


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
number grades 
numerical and continous bc you can get a grade of 89.9 percent


NAME TYPE OF DATA
letter grades 
catergorical


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
lists of people's incomes 
numerical and continous bc income can be listed as a decimil ex 33,000.34 per yr


What are (2) types of numerical variables?

(1)descrete (2)continous


NAME
this has (2) types of variables:descrete and continous 
numerical


What are descrete variables?

are countable values


NAME
these include countable values 
descrete variables


What are countinous variables?

include fractions and decimils and u can not count them


NAME
these include fractionsa and decimils and u can not count them 
countinous variables


discrete variable are (1)

random variables


(1)variable are random variables

discrete


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
# of children born in a hostpal 
numerical and descrete data


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
number of traffic accidents in a day 
numerical and descrete


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
number of bad checks written at walmart today 
numerical and descrete data


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
a list of people's incomes 
continous


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
a list of people's hieghts 
continous


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
a list of grades (ex A,B,C,D, and F) 
catergorical


NAME TYPE OF DATA IF NUMERICAL NAME WHAT TYPE IT IS
here is a list of people's grades. 70, 70, 88, 99, 100 
numerical and continous


How does stats use data? (3)

by collecting data (2)analzying it (3)interpeting the data;s results (making descions)


Make a pie chart using the following data
A's= 60 B's= 70 Cs= 50 Ds=20 Fs= 10 
A=30%
B=35% C=20% D=10% F=5% 

What is the frequency?

is the # of times a observation ocurs


NAME
is the # of times a observation occurs 
frequency


If this was a bar chart fill in the blanks
! ! ! ! (a) ! (b) 
a= frequency (y axis)
b= catergories or observations 

Click on the link and answer the following questions
http://img.photobucket.com/albums/v675/rrmagure/Statschart1.jpg a)what is the % of rain? b)what precent of did the forcast predict it would rain? c)Compare the weather's predictiont to the atucall weather, how often did they forcast the correct predication? (d)is there any assocation btwn the actual weather and the ability of the forcasters to predict the weather correctly? 
(a)93%
(b)24.7% (c)80.8% ((27 + 268)/365) (d)268/275= 97% 

use the following
10 2 8 10 7 25 4 15 8 6 5 5 12 19 10 10 20 10 8 15 17 5 5 8 5 6 FIND the interveal (2)frequency of each (3)relative frequency (4)cummulative frequency 
see notes


Why would you use cummulative frequency?

to show you information about the data


What are some of the differ ways that catergorical data can be graphed? (5)

(1)frequency table (2)distributio (3)bar chart (4)pie chart (5)contingency table


What is marginal distribution?

refesr to the distrubtion of either variable alone


NAME
this refers to the distrubtion of either varaible alone 
conditioned distribution


What is conditional distrubtion?

refers to the distrubtion of a variable restricting the Who only considering a smaller group of indivudals


NAME
this refers to the distrubtion of a varaible restricting the WHO only considering a smaller group of indivudals 
conditional distrubtions


What is the purpose of distribution of variables? (2)

(1)to show the possible values of the variable end (2)the relative frequency of each value


NAME
the purpose of this is to show the possible values of the variable end and the relative frequency of each value 
distribution of variables


How do u find the relative frequency?

divde the frequency by the total and multiple by a 100


NAME
to find this you whould divide the frequency by the total and multiple by a 100 
the relative frequency


What is the purpose of a cummulative frequency?

to show u how the data can saysomething such as 70% of student at Santa Fe travel btwn 9.6 and 13.5 miles to get to school


How do u find the midpoint?

(x1+x2/2, y1+y2/2)


NAME
is the foundation of stats 
the histogram


the histogram is the (1)of stats

the foundation


What is frequenstastics?

is the based on using a histogram


NAME
this is based on using a histogram 
frequenstastics


NAME
this means that there is more than two modes 
polymodel


What is the simpson paradox?

refers to averaging differ groups which my result in a contradiction


NAME
this refers to averaging differ groups which my result in contradictions 
simpson paradox


Using the data, make a stem and leaf plot
3.72 3.75 3.79 3.81 3.82 3.61 3.62 
Stem Leaf
3.6 1 2 3.7 2 5 9 3.8 1 2 

What does increments does the stem and leaf plot have to be in?

1 not zero


What are some things that the center or central tendency can be used to measure? (4)

(1)mean (2)mode (3)median (4)med range


What is the mean?

the average of numbesr


NAME
this refers to the average 
mean


What is the mode?

refers to the most frequent occuring number


NAME
this refers to the most frequent occuing number 
mode


What is the median?

the middle number


NAME
this refers to the middle number 
median


What is the mid range?

the (highest + the lowest)/2


−
What does X ? 
the mean


What is the symbol for the mean? (2)

−
X or u 

What is the formula for finding
 the X ? 
∑ X/ n


What does the symbol ∑ stand for?

the sum of a observation


What does n stand for?

number


NAME
this represents the center of the data for a skewd graph 
mediain


What represents the center of the data?

the mean


The mean represents the (1)of the data

center


The mean is highly affected by the (1)

extreme values


NAME
this is highly affected by the exterme values 
mean


WEIGHT OF TURKEYS IN FL
17, 18, 20, 21, 17, 25, 12, 17, and 22 1)what is the mode? 2)and what can you conclude based on the mode? 
(1)17 (2)that most turkeys in Fl wieght 17 pds


75, 80, 90, 65, 100, 95, 82
1)Find the median 
NOTE: put in order first
1)82 

110, 100, 90, 150, 120, 200, 90, 95
1) what is the mediain? 
NOTE: put data in order first
median= 110 + 120/2 = 115 lbs 

What function in the graphing calculator can u use to find the average, the lower and upper quartiles, the max, and the mean?

1var stats


What does Q1 represnt?

the first 25 percent of the data


NAME
this represnets the first 25 percent of the data 
Q1


What does Q3 represent?

75% of the data


NAME
this represents 75% of the data 
Q3


What is the 5 number summury in order that you use for the box plot? (5)

(1)min (2)Q1 (3)median (4)Q3 (5)max


Draw a basic box plot
Use labels 
see notes


Using Graph 8, tell what the labels represnt on the box plot?

(a)outliners (b)min (c)Q1 (d)median (e)Q3 (f)max


What is frequency table?

records the total of category names


What kind of Graph is graph 9 and what type of data does it display?

a frequency table (2)categorical


What kind of graph is a graph 10, and what kind of data does it have?

(1)a relative frequency table (2)categorical data


What is a relative frequency table?

records the total category names of data in percents


NAME
this records the total category names of data in precents 
relative frequency table


What kind of graph is graph 11, and what kind of data does it have?

(1)bar chart (2)categorical data


What kind of data does the pie chart or graph 12, display?

categorical data


Using graph 14,
(1)What kind of graph is it? (2)what kind of data does is display? (3) describe the distrubution 
(1)contingency table (2)catergorical data
(3)marginal distribution 

Using graph 14,
(1)what is the type of graph? (2)what kind of data is being displayed? (3)What is the distribution? 
(1)contingency table (2)categorical data (3)conditional distribution


Using graph 15,
(10 what is the type of graph? (2)what kind of data is being displayed? 
(1)segmented bar chart (2)categorical data


Using graph 16, find the marginal distrubution?

see whole chart


Using graph 16, find the conditional distribution of blood ?

seperate each varaible on its own


Use graph 17,
(1)what type of graph is it? (2)what kind of data is it displaying? 
(1)histogram (2)numerical


Use graph 18,
(1)what kind of graph is it? (2)what kind of data is being displayed? 
(1)stem and leaf plot (2)numerical


What does the shape of the distribution refer to? (4)

(1)the mode (2)the distrubtion (wheteher skewd, symetric, or uniform) (3)outliners (4)gaps


NAME
this refers to the mode, the distrubtion (whether skewed, symetric or uniform), outliners, and gaps 
shape


Use graph 19,
(1)what kind of graph is it? (2)what kind of data is being displayed? 
(1)time plot (2)numerical


What kind of graphs can display numerical data? (4)

(1)histogram (2)stem and leaf polt (3)dot plot (4)time plot


What is the spread?

refers to the disburtion of the numbers from start to end


NAME
this refers to the distrubtion of the numbers from start to end 
spread


How do you find the IQR?

is the Q3Q1


What does IQR stand for?

interquartile range


For skewed data, it is better to report the (1)than the (2)of the data

(1)median (2)mean


NAME
the center is represented by this if the data is symmetric 
average


What is a census?

is a sample of a whole entire population


NAME
this is a sample of a whole entire population 
census


What is the greek letter for the
− mean or y ? 
u


What does the greek letter u stand for?

mu


What is the u?

the greek letter for the mean


Using the data in your calculator L1, sketech a histogram
(1)what are the interverals? (2)what are the students frequency's? (3)What are the relative frequency? (4)What are the cummulative frequency? 
see section of notes for specfic answer


Using the data in your calculator L1, sketech a histogram,
(1)What is the spread of the data? (2)what is the shape of the data? (2)what type of data is it? NOTE u dont not need to give the outliners 
(1)2 to 25 (2)distrubtionskewd to the right, mode=unimodal, gap=btwn 21.167 and 25 (2)numerical and discrete data


How do u find the outliners? (2)

(1)Q3+1.5IQR
(2)Q11.5IQR 

Using graph 20,
(1)what is a? (2)what is b? 
(a)y or frequency (2)catergories


What are outliners?

are observations which are differenet from the rest of the data


NAME
these are observations that are differ from the rest of the data 
outliners


What does IQR stand for?

interquartile range


How do u find the IQR?

Q3Q1


What can u tell IQRis a large number?

that the data is spread far out


What can u tell if IQR is a smalll number?

then the data is close together


How do u find the outliners?

(1)Q3+ 1.5(IQR)
(2)Q11.5(IQR) 

If Q3=110 and Q1= 70
By hand tell if the outliners are 5, 10 ,and 150? 
IQR=40
outliners= 170 and 10 thus, 200 and 10 are the outliners while 150 is not 

Use the data in L1 of your calculator,
(1)what are the outliners? 
they are 55, 60, 70


The average income of a family is 45,000 and the σ=5.
By hand tell, what percent of have families have a income more than 45,000? 
50%


The average income of a family is 45,000 and the σ=5.
By hand answer the question (1)What percent of families have a income btwn 40,000 and 50,000? 
u+/σ = 45,000+/5,000
=40,000 btwn 50,000=68% 68% 

the area is equal to the (1) in normal distrubtion

percent


the (1)is equal to the percent in the normal distrubtion

area


The average income of a family is 45,000 and the σ=5.
By hand answer the question (1)What is the percent of families that have a income more than 50,000? 
68%/2 = 34%
50%34%=16% 

The average income of a family is 45,000 and the σ=5.
Using you calculator, answer the following question (1) what are the percent of families that have a income btwn 37,00 and 49700? 
lower= 37000
upper=49700 mean or u= 45,000 σ= 5,000 answer= less than 1 percent 

The average income of a family is 45,000 and the σ=5.
Using you calculator, answer the following question (1)what are the percent of families have a income greater then 45,000? 
lower= 45,000
upper= 100,000 mean or u=45,000 σ = 5,000 answer= 50% 

The average income of a family is 45,000 and the σ=5,000.
Using you calculator, answer the following question (1)what are the percent of families have a income btwn 40,000 and 50,000? 
lower= 40,000
upper=50,000 u= 45,000 σ = 5,000 answer= 68% 

The average income of a family is 45,000 and the σ=5,000.
Using you calculator, answer the following question (1)what are the percent of families have a income more than 50,000? 
lower= 50,000
upper=200,000 mean or u= 45,000 σ= 5,000 answer= 15% 

What is the mean of a standard normal?

0


The (1)of a standard nomral is 0

mean


What is the mean of a standard normal?

0


What the s of a standard normal?

1


What is the s of a standard normal?

1


What does the z score represent?

a random varaible


NAME
this represents a random varaible 
z score


Using graph 29,
(1)what is the area from 1 to 1? 
68%


Using graph 29,
(1)what is the area from 2 to 2? 
95%


Using graph 29,
(1)what is the area from 3 to 3? 
99.7%


Using graph 29,
what is a observation that can be made? 
that the proptional area does not chane but the mean and s does change


How do u find the z score?

z= xu/σ


The average income of a family in gainsville is 45,000 and the σ is 5,000.
(1)By hand find the z score of a person who has a income of 45,000 
z= xu/σ
45,00045,000/5,000 = 0 

The average income of a family in gainsville is 45,000 and the σ is 5,000.
(1)By hand find the z score of a person who has a income of $55,000? 
z($55,000)
z=(xu)/σ 55,00045,000/5,000= 2 

The average income of a family in gainsville is 45,000 and the σ is 5,000.
Answer the following question by hand (1)A person has a z score of 1, what was there income? 
z=xu/σ
1=(x45,000)/5000 income= 50,0000 

The average income of a family in gainsville is 45,000 and the σ is 5,000.
By hand answer the following questions (1)What is the z score for the people whose income fell btwn the range of 40,000 and 50,000? 
z($40,000)
40,00045,000/5,000 z(50,000) 5045,000/5,000 z score = 1<x>1 

z= (xu)/σ
What is the x called? 
row score


v going up is (1)

negative


v going (1)is negative

up


V going down is (1)

postive


v going (1)is negative

up


What is the differ btwn the postive and negative values of g and v? (2)

(1)v going up is postive and v going down is  (2)while g going up is negative and v going down is postive


What are the (2) frames of reference for a boat crossing a river?

(1)shore (2)water


What are (2) frames of reference for a airplane in a cross wind?

(1)ground (2)air


How can a reference frame move?

either by translation or roatation


the earth is a (1)and (2)frame

roatating and transalating


When does the earth rotate?

every 24 hours


Why can we feel the roating of a merry go round?

bc a merry go round rotates faster than the earth


What does vector r mean?
PB 
it means vector r in postion relative to B


What does vector r mean?
PA 
it means vector r in postion relative to A


vector r = (1)
PB 
 vector r
PB 

 vector r= (1)
PB 
vector r
PB 

vector r = (1)
PA 
 vector r
PA 

 vector r = (1)
PA 
vector r
PA 

Using graph M (notecard),
how would u find vector r ? PA 
vector r = r + r
PA PB BA 

Using graph M (notecard)
How would u find the vector v? PA 
vector v = v + v
PA PB BA 

Using graph M (notecard),
How would u find the vector r? PB 
vector r = r + r
PB PA AB 

Using graph M (note card),
how would u find the vector v? PB 
vector v = v + v
PB PA AB 

Using graph N (note card)
(1)what do does 1 and 2 represent? 
(1)=θH
(2)=θC 

What does θC stand for?

the course angle


What does θH stand for?

the heading angle


What is the course of the boat?

is the line of the surface of the earth


What is the heading of the boat?

is where the boat is headed to on shore


Using graph N,
how would u find the vector v? BS 
vector v = v + v
BS BW WS 

Using graph N,
what are are the (1) and (2) represent? 
(1)= θH
(2)=θC 

Draw sketches of the two types of model problems of boats that have right angles

See Graph G (answer)


Using graph P (notecard)
how would u find vector v? PG 
vector v = v + v
PG PA AG 

T or F
a bar chart can be skewed to the left 
false


Can a bar chart be skewed to the left or right?

no bc it is catergorical


T or F
catergorical data can be skewed to the left or right 
false


Can catergorical data be skewed to the left or right?

no


What type of data is can be skewed to left or right?

numerical


u= 50,000
σ =6,000 What is the mileage of the lower 3%? 
(1)first draw a pic of what u want
(2)use InvNorm in calculator area=.03 u=50,000 σ =6,000 (3)the answer is 38715.238 

When using the InvNorm funciton in the calculator, what/how do u put the data in the calculator? (3)

in this order
(1)area (2)u (3)σ 

u= 50,000
σ =6,000 What is the mileage of the lower 1%? 
(1)draw a pic of what u want to find
(2)area=.01, u=50,000, u= 50,000, σ= 6,000 (3)the answer is 

u= 50,000
σ =6,000 What is the mileage of the top 3 %? 
(1)draw a pic of what u want to find
(2)area= 97%, u=50,000 and σ=6,000 (3)the answer = 61284.76 

u=80
σ=5 What is the the grade of the lower 16% of the class? 
(1)draw a pic of what u want to find
(2)use InvNorm function (3)area=.16, u=80, and σ=5 (4)the answer is 75.02 

For a normal table,
supose u=80 and σ=5? P(74<x>86) Find the percent of students with the above scores? 
(1)use the number 2 selection on ure calculator
(2)lower=74 upper=86 u= 80 σ=5 (3)answer is 77% 

Suspose the area under a normal curve is .23, x=77, and σ=8? find u

(1)draw a pic of what u whant to find
(2)use inverse norm on a calculator to find z to find u area=0.23 u=0 σ=1 (u=0 and σ=1 bc a normal curve σ=1 and u is 0) (3)Next plus the z score into the formula to find the u of the normal curve (4)z=(xu)/σ 77u=0.7468 77+5.9=u u=82.9 

What is the inverse norm used for?

to find the range of data that is a certain area


What is the normalcdf in the calculator used for?

is used to find the percent of data for certain range of data


NAME
this calculator function is used for find the range of data for a certain area 
inverse norm function


NAME
This calculator function is used to find the percent of data for certain range of data 
normal cdf function


NAME
this calculator function is used to find the range of data that a certain percent falls into 
inverse norm function
