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- 1. Multiple Choice
What is variability?
The data that you collected
A numerical value
Differences... how things differ
A subset of a population
- 2. Fill in the Blank
A numerical value of a sample is called a...
- 3. Multiple Choice
If I take a random sample 20 hamburgers from FIVE GUYS and count the number of pickles on a bunch of them... and the average number of pickles was 9.5, then 9.5 is considered a _______?
Statistic
Parameter
Sample
Population
- 4. Multiple Choice
Which of the following is NOT true for a discrete variable?
It is a numerical value
It is quantitative, not qualitative
You can usually calculate the mean of it
It is usually a number with decimal numbers
- 5. Multiple Choice
What is frequency?
How often something comes up
It's a synonym of the word statistic
The absolute amount of a value
Something you use to solve an equation
- 6. Multiple Choice
What is the difference between a bar chart and a histogram?
A bar chart is only for qualitative variables, a histogram is only for quantitative variables
Bars don't touch in a bar chart, but they do in a histogram
A bar chart is usually graphed in horizontal, a histogram is usually graphed in vertical
They are synonyms
- 7. Multiple Choice
Ana has 3 dollars, Bruce has 4 dollars, Celine has 5 dollars, Damian has 6 dollars and Ewan has 7 dollars.
If suddenly Ewan has 70 dollars instead of 7 dollars, what would happen with the mean and the median?
They would stay the same
The mean would change, the median would stay the same
The mean would stay the same, the median would change
Both values would change
- 8. Fill in the Blank
If you order all numerical values of a study and you take the one right in the middle, that value is called the...
- 9. Fill in the Blank
The most common value of a study is called the...
- 10. Multiple Choice
How do you find the relative frequency?
We don't use relative frequency in statistics
Take all the variables and then divide them by themselves
Just count how many times a value is repeated
Take the frequency of a value and then divide it by the total
- 11. Multiple Choice
Hair color, gender, music preferences are examples of...
A categorical variable
A quantitative variable
A parameter
A sample
- 12. Multiple Choice
When you want to get information from every single person from a group, that kind of study is called a...
Survey
Census
Population
Median
- 13. Fill in the Blank
A numerical summary of a population is called a...
- 14. Multiple Choice
Last quarter, my grades were 40, 60, 40, 60 and 100. If I calculate the mean I will get...
50
60
70
80
- 15. Multiple Choice
Last quarter, my grades were 40, 60, 40, 60 and 100. If I calculate the median I will get...
50
60
70
80
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