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Parametric And Non Parametric Tests Quiz 1 (25 MCQs)

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1. The number of degrees of freedom in a Chi square table with 3 rows and 4 columns are
2. For the application of chi-square test, the expected frequency in each cell should be
3. The hypothesis in an analysis of variance gets rejected if
4. What test we can used to find the differences between three or more groups from an independent-measures design?
5. In one of your experiment you counted 1600 seeds, and observed 404 as yellow and rounded, 420 as yellow and wrinkled, 400 green and round, 376 green and wrinkled. Could it be that seed colour and shape outcome are equal likely at 5% level of significance. What is the value of chi square calculated?
6. The chi-square test of independence relies upon what type of data?
7. Null and alternative hypotheses are statements about:
8. Which of the following is NOT true about the standard error of a statistic?
9. Twenty-five children are chosen randomly from a school playground. Their heightsare measured when they first come into school the next morning, and again just before they go home that same evening. What statistical test could be usedto test the hypothesis that their morning heights are no different from theirevening heights?
10. The critical value of z for a two tail 90% confidence interval is
11. In analysis of variance, which form of variance must be estimated?
12. Which statement are true about chi-square?I. Nonparametric testII.The chi-square distribution is positively skewedIII.Have five types of chi-square testIV.Parametric test
13. To determine whether the test statistic of ANOVA is statistically significant, it can be compared to a critical value. What two pieces of information are needed to determine the critical value?
14. The observed values are 30, 35, 38, 37, 39, 42, 45. What will be value of Chi square calculated
15. In which of the following cases could you use a paired-samples t-test?
16. For a random sample of 9 women, their average resting pulse rate is 76 beats per minute, and the sample standard deviation is 5. The standard error of the sample mean is
17. In testing a hypothesis about two population means, it the t distribution is used, which of the following assumptions is required?
18. Indicate whether you would expect a positive or a negative correlation:Model year and price for a used Honda
19. The following are characteristics of Chi-square test of independence except:
20. We want to conduct a Mann Whitney test on the IQ of girls and boys. A sample of 5 boys and 6girls was selected. There details are as follows:Boys-112, 113, 116, 112, 121. Girls-112, 115, 116, 121, 124, 118. Find sum of ranks of Boys
21. If the p-value is less than or equal to your alpha, the null hypothesis is _____
22. Two students compared two brands of chips, Frito Lays and Golden Flakes, to see which company gives you more for your money. Five bags of each brand (which, according to the label, each contained 35.4 grams) were measured with a very accurate scale. Use the Mann Whitney test to see if there are any significant differences between the two brands in the amount of product they put in their bags. What can be the alternate hypothesis?
23. Which statistical measure of central tendency is used for Non Parametric test
24. Two samples of sizes 25 and 35 are independently drawn from two normal populations. The number of degrees of freedom for t-test statistic is:
25. The degrees of freedom for the t test to test the hypothesis about paired sample are
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