AP Stats unit 1 Review

Front

What is the mean in a normal distribution?

Back

The mean is the average value of a set of data points, representing the center of the distribution.

Front

What does standard deviation measure in a dataset?

Back

Standard deviation measures the amount of variation or dispersion of a set of values.

Front

What is a percentile?

Back

A percentile is a measure used to indicate the value below which a given percentage of observations in a group of observations falls.

Front

How do you find the 75th percentile in a normal distribution?

Back

To find the 75th percentile, you can use the formula: P = mean + (z * standard deviation), where z is the z-score corresponding to the 75th percentile.

Front

What does it mean if a distribution is skewed left?

Back

A left-skewed distribution has a longer tail on the left side, indicating that the majority of the data points are concentrated on the right.

Front

What is a dot plot?

Back

A dot plot is a simple visual representation of data where each data point is represented by a dot above a number line.

Front

What is the difference between mean and median?

Back

The mean is the average of all data points, while the median is the middle value when the data points are arranged in order.

Front

What does it mean if the mean is greater than the median?

Back

If the mean is greater than the median, it suggests that the distribution is skewed to the right.

Front

What is a stem-and-leaf plot?

Back

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

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points within specified ranges (bins).