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Multiple Choice Quiz
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1
Which of the following is the most true about calculating percentages in a two dimension table?
A)Calculate percentages on the vertical dimension.
B)Calculate percentages in the direction of the dependent variable.
C)Calculate percentages in the direction of the independent variable.
D)Calculate percentages on both dimensions.
2
There are a number of rules for the correct use of percentages in statistical reports. Which of the following is a good rule?
A)Percentage increases should never exceed 100%.
B)To emphasize differences between small numbers one should use percentages
C)Average of percentages need to be weighted.
D)A and B are correct.
E)A and C are correct.
F)B and C are correct.
3
It is proposed that income changes affect saving motivation, which in turn affects actual savings. The motivation variable in this case is:
A)A dependent variable
B)An independent variable
C)A component variable
D)An extraneous variable
E)An intervening variable
4
When a test factor is added to a 2-way relationship we may find that the impact of the test factor affects one subgroup more than another. This is an example of a:
A)Distorted relationship
B)Conditional relationship
C)Interlocking relationship
D)Variable relationship
E)Causal relationship
5
Non resistant statistics:
A)Include the mean or standard deviation.
B)Include interquartile range and median.
C)Are affected by extremes.
D)A and C are correct.
6
Exploratory data analysis ...
A)starts with a visual inspection of the data
B)includes examining the mean and variance of a variable
C)is a qualitative technique to assess the data quality
D)none of the above.
7
Non linear transformations are needed to
A)To reduce skewness
B)To stabilize variance.
C)To make variables from different scales comparable.
D)All of the above.
E)A and B only.
8
In tables that cross an independent variable with a dependent variable
A)independent variables should be printed in the row
B)percentage distributions should printed in the direction of the dependent variable
C)The highest percentage value should be used as a reference category.
D)A and B are correct.
E)B and C are correct.
F)A and C are correct.





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