i need help with question # 2 & 4 Provide an appropriate response. 1) Suppose th

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i need help with question # 2 & 4

Provide an appropriate response. 1) Suppose that al I the values in a data set are converted to z-scores. Which of the statements below is true? A: The mean of the z-scores will be zero, and the standard deviation of the z- standard deviation of the original data values. B: The mean and standard deviation of the z-scores w original data values. C. The mean of the z-scores will be 0, and the standard deviation of the z-scores will be 1. D: The mean and the standard deviation of the z-scores will both be zero. scores will be the same as the ill be the same as the mean and standard deviation of the 2) Which of the following statements regarding percentiles is true? (More than one statement may be true) A: In any data set, Poo is greater than Pso B: In any data setis equal to Q2 C: In a set of 20 test scores, the percentile of the second highest score is 95 P10+ P9o 3) In interpreting a boxplot of a data set we note that the median is to the left of the center of the box and the right line is longer than the left line. We can conclude that A) The data is skewed left. B) The data is symmetric. C) Skewness or symmetry cannot be determined by a box plot. D) The data is skewed right 4) When results from a scholastic assessment test are sent to test-takers, the percentiles associated with their scores are also given. Suppose a test-taker scored at the 89th percentile for their verbal grade and at the 16th percentile A) This student performed better than 1 1% of the other test-takers in the verbal part and better than 84% in B) This student performed better than 89% of the other test-takers in the verbal part and better than 84% in C) This student performed better than 11% of the other test-takers in the verbal part and better than 16% in D) This student performed better than 89% of the other test-takers in the verbal part and better than 16% in for their quantitative grade. Interpret these results. the quantitative part. the quantitative part. the quantitative part the quantitative part B-1

Explanation / Answer

Ans:

2)Option A and C are correct.

(19/20=0.95,so 95th percentile)

4)

89th percentile means that 89% of the data falls below it.

16th percentile means that 16% of the data falls below it.

So,option D is correct.

This student performed better than 89% of the other test takers in the verbal part and better than 16% in the quantitative part.

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