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Question 600:

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 Spearmanís 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 studentís t distribution, there is only one F distribution.

Pearsonís coefficient of correlation can be used if the data is nominal scale.

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