The z-test is an appropriate inferential statistical method for ordinal data if the sample size is large and the population standard deviation is not known.
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Q14: In hypothesis testing,it is very difficult
Q15: Descriptive statistics are used to make inferences
Q16: Sometimes variables may be bimodal,which means that
Q17: For interval data,the chi-square test is the
Q18: The mode is defined as the middle
Q20: Three measures of dispersion are often used
Q21: The F-test measures the proportion of variation
Q22: The _ is an especially important and
Q23: The median is not applicable for
A) nominal
Q24: The _ is an appropriate measure of
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