11.1 Facts About the Chi-Square Distribution
Shape, mean, and standard deviation of the chi-square curve, its right skew, and how degrees of freedom are counted differently by each test that uses it.
4 exercises
11.1 Exercise 1
If the number of degrees of freedom for a chi-square distribution is 25, what is the population mean and standard deviation?
11.1 Exercise 3
When does the chi-square curve approximate a normal distribution?
11.1 Exercise 6
Decide whether the following statements are true or false.
As the number of degrees of freedom increases, the graph of the chi-square distribution looks more and more symmetrical.
11.1 Exercise 8
Decide whether the following statements are true or false.
The mean and the median of the chi-square distribution are the same if df = 24.
Adapted from Statistics © 2022 Rice University. Licensed under CC BY 4.0. Source: Statistics. Imported at revision 7dea80a.