Question

Question 15

Which of the following data sets would you expect to have the highest mean?

Speed of cars during a professional car race (in mph)

Prices of used cars (in dollars)

Height of pit bulls (in inches)

Ages of kids in a preschool program (in years)

Question 16

Which data outcome of the speed of cars would best support installing a speed bump?

Low mean with small standard deviation

High mean with small standard deviation

High mean with high standard deviation

Low mean with high standard deviation

Question 12

If a data set is right skewed, where would the mean be in relation to the mode?

At the same value

Right skewed distributions don't have a mean nor mode

At a lower value

At a higher value

Question 8

Cameras are set up to watch an intersection and determine how many cars are let through with each green light interval. This study design would be considered:

Observational

Experimental

Survey

Simulation

Question 6

The compensation of all college graduates would be considered:

Nominal data

Ratio data

Ordinal data

Qualitative data

Answer 1

15.

Obviously, Prices of used cars will have highest vales than other variables and thus have the highest mean.

Prices of used cars (in dollars)

16.

If the speed of cars have high mean, there will be requirement of installing a speed bump to lower down the mean speed.

High mean with high standard deviation

12.

If a data set is right skewed, mean will greater than mode.

At a higher value

8.

The researchers simply collect data based on what is seen and heard and infer based on the data collected. The researcher has no control over any of the variables in the study. So, the study design would be considered as

Observational

9.

The compensation of all college graduates is continuous quantitative variable with defined zeros and differences between compensations can be calculated. So, the compensation of all college graduates can be considered as

Ratio data