Chi-squared practice

Front

What is the χ² calculated value for the following situation? Options: 6.65, 6.66, 0.00991, 1

Back

6.65

Front

If the χ² critical value = 5.99 and the χ² calculated value = 7.35, what is the conclusion? Options: Reject Ho, accept H1; Accept Ho, reject H1; there is not enough info to decide; The conclusion can only be made if we also know the p-value

Back

Reject Ho, accept H1

Front

What is the null hypothesis? Options: Injury type is independent of position played; Injury type is dependent on the position played

Back

Injury type is independent of position played

Front

Find the degrees of freedom. Options: 4, 5, 6, 7

Back

6

Front

For a p-value from the calculator of 1.32355E-3 what would the conclusion be if testing at 10% significance level? Options: Accept Ho; Reject H1; Reject Ho; Need to know the chi-squared number

Back

Reject Ho

Front

What does the chi-squared test measure?

Back

The chi-squared test measures how expectations compare to actual observed data.

Front

What is the formula for calculating the chi-squared statistic?

Back

χ² = Σ((O - E)² / E) where O = observed frequency and E = expected frequency.

Front

What does a high chi-squared value indicate?

Back

A high chi-squared value indicates a significant difference between observed and expected frequencies.

Front

What is the significance level (alpha) in hypothesis testing?

Back

The significance level (alpha) is the threshold for rejecting the null hypothesis, commonly set at 0.05 or 0.10.

Front

What is the relationship between p-value and significance level?

Back

If the p-value is less than the significance level, we reject the null hypothesis.