AP Stat Unit 1 & 2 Review

Front

What is the third quartile in a data distribution?

Back

The third quartile (Q3) is the value that separates the highest 25% of the data from the lowest 75%. It is the median of the upper half of the data set.

Front

What does a back-to-back stem plot display?

Back

A back-to-back stem plot displays the distribution of two related data sets, allowing for easy comparison of their distributions.

Front

What is a density curve?

Back

A density curve is a graphical representation of the distribution of a continuous random variable, showing the probability of different outcomes.

Front

How do you determine the proportion of outcomes greater than a certain value in a density curve?

Back

To determine the proportion of outcomes greater than a certain value in a density curve, you calculate the area under the curve to the right of that value.

Front

What is a stem-and-leaf diagram?

Back

A stem-and-leaf diagram is a method of displaying quantitative data in a graphical format, similar to a histogram, that retains the original data values.

Front

What does it mean if the mean is larger than the median in a data distribution?

Back

If the mean is larger than the median, it indicates that the distribution is positively skewed, meaning there are some higher values pulling the mean up.

Front

When is a pie chart an appropriate graph to use?

Back

A pie chart is appropriate when you want to show the relative proportions of categories within a whole, such as the distribution of favorite colors.

Front

What is the mean of a data set?

Back

The mean is the average of a data set, calculated by summing all the values and dividing by the number of values.

Front

What is standard deviation?

Back

Standard deviation is a measure of the amount of variation or dispersion in a set of values, indicating how much the values deviate from the mean.

Front

How do you convert ounces to grams?

Back

To convert ounces to grams, multiply the number of ounces by 28, since 1 ounce is approximately equal to 28 grams.