Question

Question 19 (3 points) Saved Which of the following is not a good tool for determining whether or not data is normally distributed? Histogram Boxplot Stem-and-Leaf display O Pie Chart Question 20 (3 points) Saved The Central limit Theorem says that the sampling distribution of the sample mean is equal to the population mean divided by the sample the sampling distribution of the sample mean is approximately normal if the sample size is large. the standard deviation of the sampling distribution of the means is equal to the population mean. the standard detration of the sampling distribution of the means is equal to the population standard de iation

Answer 1

19. Ans. 3 Stem and Leaf display

Reason: One can also determine Normality of data by using Stem and Leaf display, but this is not a good tool for determinig normality of the data when sample size is small.

20. Ans. 2

Reason: Central limit theorem only say that sample mean follows normal distribution asymptotically ( i.e. when sample size is large).