Quiz CT_Variability

# Quiz CT_Variability - Classroom Quiz After 5 points are...

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Classroom Quiz After 5 points are added to every score in a distribution, the mean is calculated and found to be µ = 30. What was the value of the mean for the original distribution? a. 25 b. 30 c. 35 d. cannot be determined from the information given Which of the following actions will always change the value of the mean? a. changing the value of one score b. adding a new score to the distribution c. removing a score from the distribution d. All 3 of the other choices are correct.

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A teacher gave a reading test to a class of 5th-grade students and computed the mean, median, and mode for the test scores. Which of the following statements cannot be an accurate description of the scores? a. The majority of the students had scores above the mean. b. The majority of the students had scores above the median. c. The majority of the students had scores above the mode. d. All of the other options are false statements. One item on a questionnaire asks, “How many siblings (brothers and sisters) did you have when you were a child?” A researcher computes the mean, the median, and the mode for a set of n = 50 responses to this question. Which of the following statements accurately describes the measures
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Quiz CT_Variability - Classroom Quiz After 5 points are...

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