True or False
The moving average method averages out cyclical and irregular components.
When using Chi Square , the sum of the expected frequencies and the sum of the observed frequencies must be equal.
The test statistic chi-square used in a goodness-of-fit test has k-2 degrees of freedom.
Explained variation equals total variation minus unexplained variation.
A Spearman’s rank-order coefficient of -0.91 indicates a very weak relationship.
To employ ANOVA, the data must be at least the ordinal scale.
If the computed value of F is 5.01 and the critical value is 2.67, we would conclude that all the population means are equal.
Unlike student’s t distribution, there is only one F distribution.
Pearson’s coefficient of correlation can be used if the data is nominal scale.