Descriptive Statistics Review

Front

What is the probability of randomly choosing an item greater than a given z-value?

Back

50% + probability

Front

What does the line at 11 represent in a distribution?

Back

The median

Front

What percentage of observations are typically within 1 standard deviation of the mean in a normal distribution?

Back

68%

Front

Which measure of central tendency is typically the largest in a skewed distribution?

Back

Mode

Front

What is the probability of randomly choosing an item less than a given z-value?

Back

50% - (probability)

Front

Define 'mean' in descriptive statistics.

Back

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

Front

Define 'median' in descriptive statistics.

Back

The middle value in a data set when the values are arranged in ascending order.

Front

Define 'mode' in descriptive statistics.

Back

The value that appears most frequently in a data set.

Front

What is a standard deviation?

Back

A measure of the amount of variation or dispersion in a set of values.

Front

What is an outlier?

Back

A data point that differs significantly from other observations in a data set.