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WorksheetsOnRamps Chi Square Test for Independence A
Total questions: 18
Worksheet time: 11mins
When determining the expected counts from a two way table, which formula should we use?
(row total)(column total)/table total
Number of categories minus 1
row total minus 1
column total minus 1
To verify large counts for any chi-squared test, we need to make sure our __________ counts are greater than ______.
Expected, 5
Observed, 5
Expected, 10
Observed, 10
What is the expected frequency of a female who likes Pepsi?
10.5
11
14.5
6.3
How do we determine the degrees of freedom for a chi square test with two variables (homogeneity or independence)?
(number of rows-1)(number of columns-1)
Number of columns minus 1
Number of Rows minus 1
Table total minus 1
Find the degrees of freedom.
4
5
6
7
What are the degrees of freedom for the following χ² test?
6
2
5
36
An individual wants to run a chi-squared goodness of fit test to determine how students in three different education settings (lecture, group work, individual online work) performed on an exam in terms of pass/fail. How many degrees of freedom would you require for this Goodness of Fit test?
2
1
3
5
A student wants to test the hypothesis that favorite car color is independent of gender. He shows people pictures of the same car in 5 different colors, and records their preference. How many degrees of freedom will there be in his X2 test?
10
4
8
Impossible to tell from the information given
Which significance level (column) do you look at when finding the critical value?
In the formula for Chi Sqare, the O stands for
the sum
the observed frequency
The expected frequency
the p value
In the formula for Chi Sqare, the E stands for
the sum
the observed frequency
The expected frequency
the p value
: The chi-square statistic is similar to all other test statistics we have discussed in that it compares observed values to values that would be expected if Ho were true.
A chi-squared distribution only has ________ values.
Positive
Negative
Even
Decimal
The shape of the Chi-Square distribution is ___.
Left Skewed
Right Skewed
Unimodal & Symmetric
Bimodal & Symmetric
What makes the skewness of a chi-squared distribution less pronounced?
Larger degrees of freedom
Larger sample size
Smaller confidence level
Larger population
