Fundamentals Of Statistics Ch. 2

Front 1

frequency distribution

Back 1

lists each category of data and the number of occurences for each category of data

Front 2

relative frequency

Back 2

relative frequency =frequency/ sum of all frequencies

Hint 2

Front 3

relative frequency distribution

Back 3

lists each category of data together with the relative frequency

Front 4

bar graph

Back 4

constructed by labeling each category of data on either the horizontal or vertical axis and the frequency or relative frequency of the category on the other axis.

Front 5

Pareto chart

Back 5

a bar graph whose bars are drawn in decreasing order of frequency or relative frequency.

Front 6

pie chart

Back 6

a circle divided into sectors. each sector represents a category of data. the area of each sector is proportional to the frequency of each of the category.

Front 7

histogram

Back 7

constructed by drawing rectangles for each class of data. the height if each rectangle is the frequency or relative frequency of the class. the width if each rectangle is the same and the rectangles touch each other.

Front 8

lower class limit

Back 8

the smallest value within a class

Front 9

upper class limit

Back 9

the largest value in a class

Front 10

class width

Back 10

the difference between consecutive lower class limits

Hint 10

largest data value -smallest data value / number if classes

Front 11

open ended

Back 11

if the first class has no lower class limit or the last class has no upper class limit

Front 12

stem-and-leaf plot

Back 12

use the digits to the left of the rightmost digit to form the stem. each rightmost digit forms a learn

Hint 12

Front 13

split stems

Back 13

Front 14

dot plot

Back 14

place each observation horizontally in increasing order and place a dot above the observation each time it is observed

Hint 14

Front 15

uniform distribution

Back 15

the frequency of each value of the variable us recently spread out across the values of the variable.

Front 16

bell shaped distribution

Back 16

the highest frequency occurs in the middle and frequencies tail off to the left and right of the middle.

Front 17

skewed right

Back 17

the tail to the right of the peak is longer than the tail to the left of the peak

Front 18

skewed left

Back 18

the tail to the left if the peak is longer than the tail to the right of the peak.

Front 19

time-series data

Back 19

the value of the variable is measured at different points in time.

Front 20

time-series plot

Back 20

is obtained by plotting the time in which a variable is measured on the horizontal axis and the corresponding value of the variable on the vertical axis. line segments are then drawn connecting the points.