1What is the measure of central tendency most influenced by extreme scores?

2.If a distribution consists of 6, 8, 9 find

{sum of squared scores} : X2 A 90B181C256. D529

.4 Which measure of variability is determined only by the extreme values of a distribution? A Variance B MeanC Standard deviation D Range

7If two distributions have the same measure of central tendencies then the one with the greater variability will have:

A. the larger B. the smaller c.the largest number d. the median

8Which of the following statistical displays always shows the value of one of the measures of central tendency?

A Bar Graph B Stem and C Histogram D Box and leaf Whisker plot

10.Given a distribution with a mean of 22, and the standard deviation is 1.5 , find the score represented by (u-2)

A 1.5B 19C 23.5 D 25

The statistics for family incomes in a certain community were as follows: Mean $13,000 Median $11,000 Mode 12,500 Range $22,000 St. dev. $2,000

11. Which of the following statements is most correct?

A more than 50% of the families made over $13,000

B 50% of the families made over $11,000 C more than 50% of the families made under $12,500

D less than 50% of the families made under $13,000

Which of the following statements is most correct?

A more families made $12,500 than any other income

B more families made $11,000 than any other income

C more families made $13,000 than any other income

D maximum salary was $21,000

12 If all the scores of a distribution have the same value of 75, then what would be the variance of the distribution? A 75 B 1 C -1D 0

Ifthes=9andthe=16, A 3B 4C 81 D 256

14 Then what would be the population variance?

15 The mode for the following distribution is what value? 2, 3, 5, 2, 6, 3, 7, 2, 5, 3, 8, 9, 2, 3, 5, 5, 2 A 2B2,3 C2,3,5 DNomode

16 What statistical measure would be used to determine the car with the most consistent gas mileage? A Range B standard deviation C mean D median

17 Inferentialstatisticshelpsresearchersmakegeneralizations about large populations by using data from a sample of the population. A True B False

18 Whichmeasureindicatesthenumberofstandarddeviationsa score is away from the mean? A Percentile B standard deviation C z score D median

deviation

19 A distribution has a mean of 62and a standard deviation of 5. A term that is two standard deviations above the mean must have what z-score value? A64B72C-2.00D2.00

20 Foradistributionwithameanof102andastandarddeviation of 4 find the z score for the term 98. A-1.00 B-4 C4 D1.00