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WorksheetsChi-squared
Total questions: 11
Worksheet time: 8mins
What is the
χ2 calculated value for the following situation.
6.65
6.66
0.00991
1
If the χ2 critical value = 5.99 and the
χ2 calculated value = 7.35, what is the conclusion
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
What is the null hypothesis?
Injury type is independent of position played
Injury type is dependent on the position played independent
Injury type is correlated to position played.
What are the degrees of freedom for the following χ² test?
6
2
5
12
If we are testing at a 5% significance level and our p-value is 0.00453, what is the conclusion?
Accept Ho
Reject Ho
We need to know chi-squared
You cannot do this problem without a calculator
Testing at a 5% significance level, what are the correct rejection inequalities. (check all that apply)
if Xcalc2>5.99 then reject Ho
if Xcalc2<5.99 then reject Ho
if p < 0.05, then reject Ho
if p>0.05, then reject Ho
Find the chi-squared calculated value for the table.
0.486170447
1.442392006
1.45
2
Chi-squared tests are invalid if:
The calculated number is really large
One of the expected values is less than 5
One of the observed values is less than 5
The calculated numbers is really small
For a p-value from the calculator of 1.32355E-3 what would the conclusion be if testing at 10% significance level?
Accept Ho
Reject H1
Reject Ho
Need to know the chi-squared number
What must be true about the expected values in a chi square test?
greater than or equal to 2
greater than or equal to 5
greater than or equal to 10
greater than or equal to 30
If the χ2 critical value = 5.99 and the
χ2 calculated value = 7.35, what is the conclusion
Reject Ho
Do not reject Ho
there is not enough info to decide
The conclusion can only be made if we also know the p-value
