Chi-Squared
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9 questions
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- Q1What is the residual for the chi-squared statistic?The difference between the standard deviations of two tablesThe observed frequency minus the expected frequencyThe mean of the difference between the observed frequencies and expected frequency30s
- Q2The chi-squared statistic can be used to compare two proportionsTrueFalse30s
- Q3What is the mean of a chi-squared random variable with k degrees of freedom?k10k-130s
- Q4What is the purpose of a chi-squared test?To measure the difference in proportion between two variables.BothTo measure the goodness-of-fit30s
- Q5A chi-squared test can only be applied on categorical dataFalseTrue30s
- Q6A chi-squared test can only be applied on data that has a normal distributionFalseTrue30s
- Q7The data of a table on which the chi-squared test statistic can be applied needs to be:Percentages of casesFrequencies of casesMeans of cases30s
- Q8The null-hypothesis of the chi-squared test is that:The means of two populations are equalThe counts of two variables are equalThe two variables are independent30s
- Q9You can apply the chi-squared test even if the expected value for a cell in your table is 3.FalseTrue30s