Questions from Essentials of Statistics

Q: Calculate SS, σ 2, and σ for the following population

Calculate SS, σ 2, and σ for the following population of N = 5 scores: 6, 0, 4, 2, 3.

Q: Describe the scores in a sample that has a standard deviation of

Describe the scores in a sample that has a standard deviation of zero.

Q: Explain how a z-score identifies an exact location in a

Explain how a z-score identifies an exact location in a distribution with a single number.

Q: A sample has a mean of M = 53 and a standard

A sample has a mean of M = 53 and a standard deviation of s = 11. For this sample, find the z-score for each of the following X values. X = 30 X = 39 X = 70 X = 48 X = 57 X = 64

Q: You receive your midterm exam scores for four classes. In all

You receive your midterm exam scores for four classes. In all four classes, your midterm score was X = 70. Below is the mean and standard deviation for each of your classes. Compute the z-score for ea...

Q: Find the X value corresponding to z = 0.75 for

Find the X value corresponding to z = 0.75 for each of the following distributions. a. μ = 90 and σ = 4 b. μ = 90 and σ = 8 c. μ = 90 and σ = 12 d. μ = 90 and σ = 20