Herzing University/ MA320 - Statistics. Questions with Answers.

MA320 - Statistics



Statistics

Question number 1

We use a sample instead of a population because:
We don't have access to everyone in the population
We don't have enough money to question everyone in a population
We don't have time to question everyone in a population
All of the above
Correct

Question number 2

The values of quantitative continuous variables are usually:
numbers with decimals
words
whole numbers
Correct

Sixty-five randomly selected car salespersons were asked the number of
cars they generally sell in one week. Fourteen people answered that they
generally sell three cars; nineteen generally sell four cars; twelve generally
sell five cars; nine generally sell six cars; and eleven generally sell seven
cars.


Data Value (# Frequenc Relative Cumulative
cars) y Frequency Relative
Frequency

3 14 0.22 0.22

4 19 0.29 0.51

5 12 0.18 0.69

6 9 0.14 0.83

7 11 0.17 1.00

, MA320 - Statistics


Question number 3

What was the most frequent response (number of times)?

4




Correct

Data Value (# Frequenc Relative Cumulative
cars) y Frequency Relative
Frequency

3 14 0.22 0.22

4 19 0.29 0.51

5 12 0.18 0.69

6 9 0.14 0.83

7 11 0.17 1.00

Question number 4

What percent of salespersons sell at least 5 cars per week?

49


%

Correct

Question number 5

What is the variable in this study:: A researcher is interested in knowing the average salary of a
player on the Miami Marlins baseball team.
salary of a player on the Miami Marlins
average salaries of baseball players
baseball
Miami Marlins
Correct