Quiz And Poll
QUIZ START
Next
#1. Which of the following measures are inappropriate for nominal scale variables?
Next
#2. For a positively skewed distribution
Next
#3. In a box plot the length of the box is
Next
#4. If two events A and B are dependent, then
Next
#5. Which of the following statements is/are correct?
Next
#6. In association rule learning, a lift value of less than 1 for two products A and B implies:
Next
#7. An e-tailer (e-commerce retailer) is interested in predicting the number of returns that the e-tailer is likely to receive on any given day. Which of the following distributions is most appropriate for modelling this problem?
Next
#8. If the mean and standard deviation of the population are 500 and 100, respectively, and a sampling distribution is constructed by taking several samples of size 100, what will be the standard deviation (standard error) of the sampling distribution?
Next
#9. The required sample size when the maximum error in predicting the mean of a population is less than 5 with a standard deviation of 25 at confidence level 90% is:
Next
#10. Which of the following statements about null hypothesis are correct?
Next
#11. The significance value α is
Next
#12. The one-sample t-test is used when
Next
#13. In a hypothesis test
Next
#14. In a hypothesis test, the researcher uses (when α = Type I error and β = Type II error):
Next
#15. An HR manager is interested in checking the effectiveness of a training program on the sales team. The appropriate test for checking the effectiveness of the training program is
Next
#16. In a non-parametric test,
Next
#17. For a one-way ANOVA, the hypothesis test is a
Next
#18. A data scientist is studying the impact of marital status (single, married, and divorced) on annual income. The sample contains 140 single, 110 married, and 40 divorced people. The values of SSB = 2425.6 and SSW = 49,567.8. The value of F-statistic is
Next
#19. Which of the following statements are correct?
Next
#20. Pearson correlation between two variables X and Y is 0.85. Pearson correlation between 2 + 3X and 4 – 5Y is
Finish