pam2100 section_problems_3_fall10

pam2100 section_problems_3_fall10 - Round your final answer...

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Section Problems #3 #1) Student IQ score Self-concept score Student 1 110 58 Student 2 124 72 Student 3 126 83 a) What is the standard deviation of IQ scores? Round your answer to four decimal places. (2 points) b) What is the standard deviation of self-concept scores? Round your answer to four decimal places. (2 points) c) What is the correlation between IQ and self-concept? Use the numbers you rounded to four decimal places in parts a and b.
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Unformatted text preview: Round your final answer to two decimal places. (2 points) #2) Suppose that test scores are distributed N (60, 12). Fill out the table below and then plot the five points in a normal quantile plot. Label your axes. (3 points) percentile 15.87% 30.85% 50% 69.15% 84.13% test score z-score #3) Can a normal quantile plot become downward-sloping? Explain briefly. (1 point)...
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