Descriptive statistics are used to make inferences about a population.
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Q10: A Type II error has occurred if
Q11: The median is robust,but the mean is
Q12: The standard deviation is appropriate as a
Q13: A "two-tailed test" is used to test
Q14: In hypothesis testing,it is very difficult
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
Q19: The z-test is an appropriate inferential statistical
Q20: Three measures of dispersion are often used
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