11.1 Facts About the Chi-Square Distribution
Shape, mean, and right skew of a family indexed by degrees of freedom, plus how df is counted differently for each of the three tests that use it.
Introductory Business Statistics 2e, 11.1 Facts About the Chi-Square Distribution
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 Introductory Business Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Business Statistics 2e. Imported at revision 50ec917.