Question 9

A graph that would indicate whether there was a negative relationship between stock and bond returns would be:

Group of answer choices

A scatter plot with stock and bond returns

Two box and whisker plots with one above the other

A scatter plot with time and stock returns

Time series of both stock and bond returns

A frequency distribution of both stock and bond returns

Question 10

A toaster company wants to provide a warranty for its toasters, and is willing to replace about 5% of those sold each year. What type of calculation would help in determining the most appropriate warranty time to offer customers?

Group of answer choices

A binomial probability calculation for defective toasters

A normal distribution calculation for the years a toaster should last

A frequency distribution of the defective toasters each year

A pie chart of the possible percentage of defective toasters each year

An inverse normal distribution calculation from 5% to number of years

Question 12

To study the effectiveness of patient care in hospitals, an organization focused only on patients in hospitals in urban areas. Would you expect the results to be biased? Why or Why not?

Group of answer choices

No, patients in hospitals outside urban areas likely feel the same as patient in urban areas

Yes, as patients in hospitals outside urban areas may have different expectations on patient care than others

Yes, as patients may feel pressure to respond positively about patient care so as not to upset their doctor

No, as patient care is of universal interest

No, as all patients in urban areas would be equally eligible to be in the sample

Question 13

If a time series line graph shows large changes from one period to the next, one place to check to ensure the data are presented most accurately would be:

Group of answer choices

Major tick marks on the y axis

Starting point of y axis

X axis time markers

Colors used in the legend

Starting point of x axis