1. Find the meanof the distribution shown.

x 1 2

P(x) 0.31 0.69

A) 0.96

B) 1.42

C) 1.18

D) 1.69

2. For a normal distributionwith mean 5 and standard deviation6, the value 11 has a z value of

A) -1

B) 1

C) 2

D) 3

3. If the standard deviation of a probabilitydistribution is 6.25, the varianceis 2.30

True/False

4. A stem and leaf plot is useful for keeping more precision than a grouped frequency distribution.

True/False

5. What kind of relationship does the scatter plotshow between x and y?

A) A positive linear relationship C) No linear relationship

B) A negative linear relationship D) This is not a scatter plot

[Please efer to the attachment for the scatter-plot].

6. A researcher conducted a study to record the colors of students’ eyes. The appropriate measure(s) of central tendencyis (are):

A) The mode

B) The median

C) The mean

D) Both the modeand the median

This solution is comprised of detailed step-by-step calculations and analysis of the given problems related to Statistics and provides students with a clear perspective of the underlying concepts.