# Question: Convert each individual X data value to a standardized Z

Convert each individual X data value to a standardized Z value and interpret it.

a. Class exam:

John's score is 91, μ = 79, σ = 5

b. Student GPA:

Mary's GPA is 3.18, μ = 2.87, σ = 0.31

c. Weekly study hours:

Jaime studies 18 hours, μ = 15.0, σ = 5.0

a. Class exam:

John's score is 91, μ = 79, σ = 5

b. Student GPA:

Mary's GPA is 3.18, μ = 2.87, σ = 0.31

c. Weekly study hours:

Jaime studies 18 hours, μ = 15.0, σ = 5.0

## Answer to relevant Questions

For each data set, which best indicates a "typical" data value (mean, median, either)? a. MPG for 7 Honda Civics: 21.8, 24.1, 24.6, 26.2, 28.4, 35.2, 36.3 b. Number of riders in 8 cars: 1, 1, 1, 1, 1, 1, 4, 6 c. Diners at 10 ...Scores on an accounting exam ranged from 42 to 96 with quartiles Q1 = 61, Q2 = 77 and Q3 = 85. (a) Sketch a simple boxplot (5-number summary without fences) using a nicely scaled X-asis. (b) Describe its shape (skewed left, ...For each X-Y data set (n = 12): (a) Make a scatter plot. (b) Find the sample correlation coefficient. (c) Is there a linear relationship between X and Y? If so, describe it. Find the data value that corresponds to each of the following z-scores. a. Final exam scores: Allison's z-score = 2.30, μ = 74, σ =7 b. Weekly grocery bill: James' z-score = –1.45, μ = $53, σ = $12 c. Daily video game ...The "expense ratio" is a measure of the cost of managing the portfolio. Investors prefer a low expense ratio, all else equal. Below are expense ratios for 23 randomly chosen stock funds and 21 randomly chosen bond funds. (a) ...Post your question