Question

# In chi-square testing, the expected count is often calculated. What does it represent? Group of answer...

In chi-square testing, the expected count is often calculated. What does it represent?

( )

The hypothetical counts that would occur if the null hypothesis were true.

( )

The observed counts from the representative data.

( )

The hypothetical counts that would occur if the alternative hypothesis were true.

( )

The true positive counts that occur.

Solution:

In chi-square testing, the expected count is often calculated.

In chi-square testing, we state two hypothesis: null hypothesis H0 and alternative hypothesis H1.

Under H0, we state that frequencies or counts occurs according to expected proportions or expected counts.

and under alternative hypothesis H1, we state statement against the null hypothesis.

Thus under alternative hypothesis H1, we state frequencies or counts does not occur according to expected proportions or expected counts.

Thus we calculate expected counts assuming null hypothesis is true.

The hypothetical counts that would occur if the null hypothesis were true.

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