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Respond to the following short answer questions from Chapter 4 in the Morgan, Leech, Gloeckner, & Barrett
D3.4.1 Using Outputs 4.1a and 4.1b: (a) What is the mean visualization test score? (b) What is the skewness statistic for math achievement test? What does this tell us? (c) What is the minimum score for mosaic pattern test? How can that be?
D3.4.2.Using Output 4.1b: (a) For which variables that we called scale, is the skewness statistic more than 1.00 or
less than –1.00? (b) Why is the answer important? (c) Does this agree with the boxplot for Output 4.2? Explain.
D3.4.3.Using Output 4.2b: (a) How many participants have missing data? (b) What percent of students have a valid (non-missing) motivation scale or competence scale score? (c) Can you tell from Outputs 4.1 and 4.2b how many
are missing both motivation scale and competence scale scores? Explain.
D3.4.4.Using Output 4.4: (a) Can you interpret the means? Explain. (b) How many participants are there altogether? (c) How many have complete data (nothing missing)? (d) What percent are in the fast track? (e) What percent took algebra 1 in h.s.?
D3.4.5.Using Output 4.5: (a) 9.6% of what group are Asian-Americans? (b) What percent of students have
visualization 2 scores of 6? (c) What percent had such scores of 6 or less?