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Chi-Squared

Quiz by Data Analytics & Communication Help Desk

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9 questions
Show answers
  • Q1
    What is the residual for the chi-squared statistic?
    The difference between the standard deviations of two tables
    The observed frequency minus the expected frequency
    The mean of the difference between the observed frequencies and expected frequency
    30s
  • Q2
    The chi-squared statistic can be used to compare two proportions
    True
    False
    30s
  • Q3
    What is the mean of a chi-squared random variable with k degrees of freedom?
    k
    1
    0
    k-1
    30s
  • Q4
    What is the purpose of a chi-squared test?
    To measure the difference in proportion between two variables.
    Both
    To measure the goodness-of-fit
    30s
  • Q5
    A chi-squared test can only be applied on categorical data
    False
    True
    30s
  • Q6
    A chi-squared test can only be applied on data that has a normal distribution
    False
    True
    30s
  • Q7
    The data of a table on which the chi-squared test statistic can be applied needs to be:
    Percentages of cases
    Frequencies of cases
    Means of cases
    30s
  • Q8
    The null-hypothesis of the chi-squared test is that:
    The means of two populations are equal
    The counts of two variables are equal
    The two variables are independent
    30s
  • Q9
    You can apply the chi-squared test even if the expected value for a cell in your table is 3.
    False
    True
    30s

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