AP STAT FINAL YUCK EXAM QUESTIONS AND ANSWERS
how to make a boxplot - CORRECT ANSWER✅✅- A central box is drawn from the first quartile (Q1) to
the third quartile (Q3).
- A line in the box marks the median.
- Lines (called whiskers) extend from the box out to the smallest and largest observations that are not
outliers.
- Outliers are marked with a special symbol such as an asterisk (*).
discrete variable - CORRECT ANSWER✅✅variable that has specific values and that cannot have values
between these specific values. Countable distinct items (e.g., number of children, cars in a parking lot)
continuous variable - CORRECT ANSWER✅✅A variable (such as age, test score, or height) that can take
on a wide or infinite number of values.
describing a distribution - CORRECT ANSWER✅✅SOCS (shape, outliers, center, spread/variability)
Standardized test scores - CORRECT ANSWER✅✅Measured of how many SDs the data values lies
above/below the mean
Z score for a dist. of quantitive data - CORRECT ANSWER✅✅Z = value - mean
---------------
SD
Z scores and transformations - CORRECT ANSWER✅✅The dist. of z scores is the same as the og (dosnt
change)
Empirical rule - CORRECT ANSWER✅✅68-95-99.7
Finding a percentile in a ND - CORRECT ANSWER✅✅1.) Draw the ND (with axises labeled and scaled,
mean, Sad, area of intrests shaded and labeled, and the unknown boundary clearly marked)
, 2.) invNorm
Finding areas in a ND - CORRECT ANSWER✅✅Normal cdf
Marginal relative frequency - CORRECT ANSWER✅✅Gives the percent or proportion of individuals that
have a specific value for one categorical variable.
- calculate by dividing the value in each cell by table total
joint relative frequencies - CORRECT ANSWER✅✅gives the percent or proportion of individuals that
have a specific value for one categorical variable and a specific value for another categorical variable
- calculate by dividing the value in each cell by table total
Conditional relative frequency - CORRECT ANSWER✅✅gives the percent or proportion of individuals
that have a specific value for one categorical variable among individuals who share the same value of
another categorical variable (the condition)
- calculate by dividing the value of once cell by the total for the appropriate row/column
Association - CORRECT ANSWER✅✅Whether knowing the value of one variable helps predict the value
of another variable
- positive association = x goes up when y does or vice versa
- negative association = inverse relationship b/w x and y
Describing Scatterplots - CORRECT ANSWER✅✅Strength (how closely the points follow a clear form;
strong, weak)
Direction (association, +/-)
Form (linear/non linear)
Unusual features
R - CORRECT ANSWER✅✅Gives the direction and measure the strength of the linear association b/w 2
quantitative variable
- always b/w -1 and 1
how to make a boxplot - CORRECT ANSWER✅✅- A central box is drawn from the first quartile (Q1) to
the third quartile (Q3).
- A line in the box marks the median.
- Lines (called whiskers) extend from the box out to the smallest and largest observations that are not
outliers.
- Outliers are marked with a special symbol such as an asterisk (*).
discrete variable - CORRECT ANSWER✅✅variable that has specific values and that cannot have values
between these specific values. Countable distinct items (e.g., number of children, cars in a parking lot)
continuous variable - CORRECT ANSWER✅✅A variable (such as age, test score, or height) that can take
on a wide or infinite number of values.
describing a distribution - CORRECT ANSWER✅✅SOCS (shape, outliers, center, spread/variability)
Standardized test scores - CORRECT ANSWER✅✅Measured of how many SDs the data values lies
above/below the mean
Z score for a dist. of quantitive data - CORRECT ANSWER✅✅Z = value - mean
---------------
SD
Z scores and transformations - CORRECT ANSWER✅✅The dist. of z scores is the same as the og (dosnt
change)
Empirical rule - CORRECT ANSWER✅✅68-95-99.7
Finding a percentile in a ND - CORRECT ANSWER✅✅1.) Draw the ND (with axises labeled and scaled,
mean, Sad, area of intrests shaded and labeled, and the unknown boundary clearly marked)
, 2.) invNorm
Finding areas in a ND - CORRECT ANSWER✅✅Normal cdf
Marginal relative frequency - CORRECT ANSWER✅✅Gives the percent or proportion of individuals that
have a specific value for one categorical variable.
- calculate by dividing the value in each cell by table total
joint relative frequencies - CORRECT ANSWER✅✅gives the percent or proportion of individuals that
have a specific value for one categorical variable and a specific value for another categorical variable
- calculate by dividing the value in each cell by table total
Conditional relative frequency - CORRECT ANSWER✅✅gives the percent or proportion of individuals
that have a specific value for one categorical variable among individuals who share the same value of
another categorical variable (the condition)
- calculate by dividing the value of once cell by the total for the appropriate row/column
Association - CORRECT ANSWER✅✅Whether knowing the value of one variable helps predict the value
of another variable
- positive association = x goes up when y does or vice versa
- negative association = inverse relationship b/w x and y
Describing Scatterplots - CORRECT ANSWER✅✅Strength (how closely the points follow a clear form;
strong, weak)
Direction (association, +/-)
Form (linear/non linear)
Unusual features
R - CORRECT ANSWER✅✅Gives the direction and measure the strength of the linear association b/w 2
quantitative variable
- always b/w -1 and 1
