AP STATS- introductory vocabulary

Question 1

Distribution

Answer 1

general term for collection of data
–> can be represented with graphs or through numerical summaries… “The distribution of test scores shows…”

Question 2

Categorical Data

Answer 2

data that is not numerical (hair color, birth month, GPA range)
–> you CANNOT find or make sense of an average value for categorical data

Question 3

Quantitative Data

Answer 3

data that is numerical (takes on a number value)
–> it makes sense to calculate the average of these values

Question 4

Individuals

Answer 4

the set of cases, units or subjects that we collect data on (does not have to be people)

Question 5

Variables

Answer 5

the value that we collect from the individuals
–> the variable can either be quantitative or categorical

Question 6

Resistant

Answer 6

a statistical measure (mean, median, standard deviation, range, etc.) is considered resistant if it isn’t sensitive to extreme values

Question 7

Center

Answer 7

a way to describe the middle of the data
–> best done by the mean or median depending on the shape of the distribution

Question 8

Variance

Answer 8

the spread of the data
–> best done by the standard deviation or the inner quartile range depending on the shape of the distribution

Question 9

Association

Answer 9

there is an association between two variables if knowing the value of one helps predict the value of another

Question 10

Frequency

Answer 10

the count of a given variable

Question 11

Relative Frequency

Answer 11

the percent of individuals that fall into a specific category for a given variable