Question

21. Which of the following is FALSE regarding ANOVA test? A. The Kruskal-Wallis test is the non-parametric equivalent for one-way ANOVA test B. The independent variable in one-way ANOVA test should be a categorical variable The dependent variable in one-way ANOVA test should be a numerical variable (D.Doe-way ANOVA test cannot be applied to compare two means (comparison of two groups) 22. Which of the following is FALSE regarding p-value? A. The p-value is stated before conducting bypothesis testing B. If the p-value is smaller than significant level ), we reject the auld hypothesis (H) C. The p-value is calculated according to some statistics D. If the p-value is bigger than significant level (@) we failed to reject null hypothesis (H) 23. Which of the following is FALSE regarding the measurement scale? A. The lowest of the measurement scale is the nominal scale B. The gender Variable (male-female) is an example of ordinal scale C. The ratio scale has a true zero point D. The highest of the measurement scale is the ratio scale 24. Which of the following is NOT a property of the distribution? A. Has a mean of zero B. Has the mean which is not symmetrically centered C. Is more peaked in the center and has a thinner tails compared to normal distribution D. The shape of distribution depends on the sample size, 25. Which of the following is FALSE regarding confidence interval? A. Cannot be calculated if the sample size is small B. Is usually stated as 80% in medical research C. Is the interval within which we expect the population parameter will be D. Is usually stated as 95% in medical research 26. Which of the following is NOT a property of the normal distribution? A. the mean, median and the mode are equal B the total area under the curve above the x-axis is be square unit C. the standard normal distribution has zero mean and standard deviation of 1 D. the standard normal distribution has a variance grater than 1 ( 1) 27. Which of the following is FALSE regarding one-way ANOVA? A. Mean of square between groups (MS) is obtained by dividing sum of square between groups (SS) and its degree of freedom (dt) B. F-statistics value is obtained by dividing mean square between groups with mean square within groups C. Levene test is ased for testing normality of data prior to one-way ANOVA test D. istogram can be used for observing normality of distribution prior to one-way ANOVA test CamScanner

please answer correctly and answer all question..

this is revision question.. thanks..

Answer 1

21. The correct option is D.

ANOVA test can be applied to compare two means .

22. The correct option is A.

The p-value approach to hypothesis testing uses the calculated probability to determine whether there is evidence to reject the null hypothesis. In practice, the p-value, or critical value, is stated in advance to determine how the required value to reject the null hypothesis.

23. The correct option is B. The gender variable ( male and female ) is a nominal scale measurement.

24. The correct option is B. t - distribution is symmetrical about the mean .