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60 Cards in this Set

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 67, 90, 80, 100, 84, 92, 100, and 78 Find Q1 and Q3 by hand (1)find mediain to find the lower and upper half (2)Q1= 79 and Q3= 96 How do u find Q1 by hand? find the median of the lower half of the data How would you find Q3 by hand? find the the medain of the upper half What does dispension refer to? the spread NAME this refers to the spread dispension What does the dispension measure? (1)the spread of the data around the measures of the central tendency NAME this measures the spread of the data around the measures of the central tendency dispension What is the symbol for sample variance? s^2 What does s^2 stand for? the sample variance What are the (5)parts that make up the dispension? (1)s^2 (2)S (3)σ^2 (4)σ (5)range What does S stand for? sample standard deviation NAME this stands for sample standard deviation S What does the symbol σ^2 stand for? population varaince NAME this symbol represents the the population variance σ^2 What does the symbol σ stand for? the population standard deviation NAME this symbol represents the population deviation σ What is the range? is the highest minus the lowest What is the purpose of the standard deviation? to measure how much each observation is above or below the mean NAME this measures how much each observation is above or below the mean standard deviation The standard deviation measures how much each observations is above or below the (1) mean The stanard deviation measures how much each observations is (1)the mean above or below the Given that the mean is 80 and the S is 5. what would be A and C on the graph bewlow ---------------- A 80 B C A= 75 C=90 How do you find the s^2 by hand? (∑ (x-mean)^2)/(n-1) 0, 2,4, 3, and 6 Find s^2 by hand. (∑ (x-mean)^2)/(n-1) s^2=5 How do you find the σ by hand? √ ((∑x-u)^2)/(n-1)) How do you find the the σ^2 by hand? ((∑x-u)^2)/(n-1)) What does u the greek symbol in stats represent? the mean of the population NAME this greek symbol in stats represents the mean of a population u The normal curve can be also be called (1) bell curve or bell shaped symmetric distribution the (1)normal curve can also be called the bell curve or symmetric distribution normal curve Using Graph 21, (1)what is the freq about region A? (low, med, or high) low Using graph 21, (1)what are observations you can make about region A? (low, med, or high) low Using graph 21, (1)what is the frequency about region B? (low, med, or high) (low, med, or high) high Using graph 21, (1)what are observations you can make up region B? (low, med, or high)q med Using graph 21, (1)What is the frequency of region C? (low, med, or high) low Using graph 21, (1)what are some observations taht you can make about C? (low, med, or high) high What is normal distribution used for? mumerical data that is continous What type of data is the normal distrubtion of data suitable for? for data that is numerical and continous STATE WHETHER DATA IS SUITABLE FOR BELL CURVE (NORMAL DISTRUBTION) grades yes STATE WHETHER DATA IS SUITABLE FOR BELL CURVE (NORMAL DISTRUBTION) income yes STATE WHETHER DATA IS SUITABLE FOR BELL CURVE (NORMAL DISTRUBTION) list of people heights yes STATE WHETHER DATA IS SUITABLE FOR BELL CURVE (NORMAL DISTRUBTION) weight yes STATE WHETHER DATA IS SUITABLE FOR BELL CURVE (NORMAL DISTRUBTION) number of traffic accidents no STATE WHETHER DATA IS SUITABLE FOR BELL CURVE (NORMAL DISTRUBTION) number of bad checks written at walmart no STATE WHETHER DATA IS SUITABLE FOR BELL CURVE (NORMAL DISTRUBTION) number of babies born at a hosiptal no Use graph 22, (1)if you where given the standard deviation how do you find out the spread of data that falls into the C-D range? mean +/- s Using graph 22, (1)how do you find out the spread of data that falls into the B to E range? mean +/ s Using graph 22, (1)how do you find out the spread of data that falls into the A-F range? mean +/- s What is the imperical rule? 68-95-99 rule Using graph 22, (1)Given that the s is 5, what is the range of data starting from C to D? 75 to 80 If the distrubtion is normal then (1) the mean and the mode are equal If the distrubtion is (1)then the mean and the mode are the same normal Using graph 22, What was the score of students who scored in the 68% range? mean+/-5= 75 to 85 Using graph 23, What was the score of students who scored in the 95% range? 80+/-2(5)= 70 to 90 Using graph 22, what was the score of students who scored in the 99% range? mean +/-3s 80+/-15 = 65 to 95 Using graph 24, (1)tell what the distrubtion is? (2)Tell what the lables on the graph are (3)using your answers to the above, fill in the blanks A(a)B(b)C (<,>) (1)skewd to the right (2)A= mode B= median C= mean (3)mode< median) (1)skewed to the left (2)A= mean B=median C=mode (3)mean>median>mode Using graph 26 (1)tell what the distrubtion is? (2)Tell what the lables on the graph are (3)Using your answers from above, fill in the blanks A (a)A (b)A (<,>) (1)symmetric (2)A= mean, mode, and median (3)they are all equal Using graph 27, describe the distrubtion symmetric Using graph 28, describe the distrubtion symmetric