AP Statistics Chapter

What is a stem-and-leaf plot?

• A graph of a distribution of quantitative data in which all but the final digits of data values form a column called a stem and the final digit of each data value is written in increasing order outward from the column to form leaves

• A graph of a distribution of quantitative data in which each data value is shown as a dot above its location on a number line

• A graph of a distribution of quantitative data in which nearby values are grouped together in bins or classes

• A graph of a distribution of categorical data in which bars extend to display the frequency of various categories

What is a dotplot?

• A graph of a distribution of quantitative data in which all but the final digits of data values form a column called a stem and the final digit of each data value is written in increasing order outward from the column to form leaves

• A graph of a distribution of quantitative data in which each data value is shown as a dot above its location on a number line

• A graph of a distribution of quantitative data in which nearby values are grouped together in bins or classes

• A graph of a distribution of categorical data in which bars extend to display the frequency of various categories

What is a histogram?

• A graph of a distribution of quantitative data in which all but the final digits of data values form a column called a stem and the final digit of each data value is written in increasing order outward from the column to form leaves

• A graph of a distribution of quantitative data in which each data value is shown as a dot above its location on a number line

• A graph of a distribution of quantitative data in which nearby values are grouped together in bins or classes

• A graph of a distribution of categorical data in which bars extend to display the frequency of various categories

What is the sample mean?

• The average of a subset of the population

• The average of a population

• A statistic that is not influenced by extreme observations

• A graph of a distribution of quantitative data in which all but the final digits of data values form a column called a stem and the final digit of each data value is written in increasing order outward from the column to form leaves

What is a resistant statistic?

• The average of a subset of the population

• The average of a population

• A statistic that is not influenced by extreme observations

• A graph of a distribution of quantitative data in which all but the final digits of data values form a column called a stem and the final digit of each data value is written in increasing order outward from the column to form leaves

What does it mean for a distribution to be unimodal?

• The graph of the distribution has one major peak

• The graph of the distribution has two major peaks

• The graph of the distribution has roughly mirror images on the left and right sides

• The graph of the distribution has one side that is much longer than the other

What is the interquartile range (IQR)?

• The average of a subset of the population

• The average of a population

• The range for the middle 50% of the data values

• The distance between the minimum and maximum values in a data set

What is a boxplot?

• A graph of a distribution of quantitative data in which all but the final digits of data values form a column called a stem and the final digit of each data value is written in increasing order outward from the column to form leaves

• A graph of a distribution of quantitative data in which each data value is shown as a dot above its location on a number line

• A graph of a distribution of quantitative data in which nearby values are grouped together in bins or classes

• A graph of a distribution of quantitative data in which a central box extends between the quartiles with a central line marking the median

• A

• B

• C

• D

• E

If the standard deviation of a set of observations is 0, you can conclude

• that there is no relationship between the observations

• that the average value is 0

• that all observations are the same value

• that a mistake is arithmetic has been made

• none of the above