In cross-tabulation,the introduction of a third variable clarifies the initial association (or lack of it)observed between two variables and can result in six possibilities.
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Q16: The valid percentage column in a frequency
Q17: If a variable is measured on a
Q18: When calculating the standard deviation,we divide by
Q19: The variance can never be negative.
Q20: The measures of location are also known
Q22: In tests of associations,the null hypothesis is
Q23: If the calculated value of the test
Q24: In tests of differences,the null hypothesis is
Q25: When using the chi-square statistic in cross-tabulation,the
Q26: Type I error occurs when the sample
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