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Six different high school students spent $10, $13, s2, $12, $13, and S4, respect

ID: 3446009 • Letter: S

Question

Six different high school students spent $10, $13, s2, $12, $13, and S4, respectively, on entertainment. The mode of this group's entertainment expenditures is 31. a. $9. b. $10. d. $12 e. $13. 32. Mr. and Mrs. Berry have five children aged 2, 3, 7,9, and 9. The median age of the Berry children is a. b. 6 C. 33. In a distribution of test scores, which measure of central tendency would likely be the most affected by a couple of extremely high scores? a. median b. range c. mode d. standard deviation e. mean 34. When Mr. Adams calculated his students' algebra test scores, he noticed that two students had extremely low scores. Which measure of central tendency is affected most by the scores of these two students? a. mean b. standard deviation c. mode d. median e. range Seven members of a boys' club reported the following individual earnings from their sale of cookies: S2, $9, S8, $10, $4, $9, and $7. In this distribution of individual earnings 35. a. the median is greater than the mean and greater than the mode. b. the median is less than the mean and less than the mode c. the median is greater than the mean and less than the mode. d. the median is less than the mean and greater than the mode. e the median is equal to the mean and equal to the mode. -36. The difference between the highest and lowest scores in a distribution is the a. mean. b. range. c. median. d. standard deviation. e. correlation coefficient. 10

Explanation / Answer

25. Placebo effect

26. Placebo effect

27. Control Group

28. Random Assignment

29. The experimental treatment is absent

30. Random Assignment

31. 13

Mode is the most occurring number in a series and here 13 occurs twice.

32. 7

If we arrange all the numbers in order and the total number is odd then the median will be the middle number. If the numbers are even then add the two middle numbers and divide by 2.

33. Mean

In any calculation mean is the average of all the scores and as the numbers differ the average will also differ despite the total numbers.

34. Mean

In extreme scores, both low and high mode and median are not affected much but mean will be affected first.

35. The median is greater than the mean and less than the mode

Median is 8, mean is 7 and Mode is 9.

36. Range