AP STATS MAICAS BASIC VOCABULARY

What is variability?

• The data that you collected

• A numerical value

• Differences... how things differ

• A subset of a population

A numerical value of a sample is called a...

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

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

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

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

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

If you order all numerical values of a study and you take the one right in the middle, that value is called the...

The most common value of a study is called the...

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