Statistics Review

Front

What is the definition of Range in statistics?

Back

The Range is the difference between the highest and lowest values in a data set.

Front

How do you calculate the Mean (Average) of a data set?

Back

Add all the numbers in the data set and divide by the total number of values.

Front

What does it mean if data is distributed Symmetrically?

Back

Symmetrical distribution means that the left and right sides of the data set are mirror images of each other.

Front

What is the Interquartile Range (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

How do you find the Median of a data set?

Back

Arrange the data in ascending order and find the middle value. If there are two middle values, calculate their average.

Front

What does Skewed Right mean in a histogram?

Back

Skewed Right means that the tail on the right side of the distribution is longer or fatter than the left side.

Front

What does Skewed Left mean in a histogram?

Back

Skewed Left means that the tail on the left side of the distribution is longer or fatter than the right side.

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 certain ranges.

Front

How do you calculate the Percent of data within a range?

Back

Divide the number of data points within the range by the total number of data points, then multiply by 100.

Front

What is a Quartile in statistics?

Back

A quartile is a type of quantile that divides a data set into four equal parts.