Describing Data Distributions

Front

What is a Lower Quartile?

Back

The Lower Quartile (Q1) is the median of the lower half of a data set, representing the 25th percentile.

Front

How do you find the Median of a data set?

Back

To find the median, arrange the numbers in order and identify the middle number. If there are two middle numbers, add them together and divide by 2.

Front

What is the Minimum value in a data set?

Back

The Minimum value is the smallest number in a data set.

Front

What does a Box and Whisker plot represent?

Back

A Box and Whisker plot visually displays the distribution of a data set, showing the minimum, lower quartile, median, upper quartile, and maximum.

Front

What percent does each section represent in a Box and Whisker plot?

Back

Each section represents 25% of the data.

Front

How do you determine the Upper Quartile?

Back

The Upper Quartile (Q3) is the median of the upper half of a data set, representing the 75th percentile.

Front

What is the purpose of a Histogram?

Back

A Histogram is used to represent the frequency distribution of numerical data, showing how many data points fall within specified ranges.

Front

What is the difference between Mean and Median?

Back

The Mean is the average of all numbers, while the Median is the middle value when numbers are arranged in order.

Front

What is an Outlier in a data set?

Back

An Outlier is a data point that is significantly different from the other data points, often lying outside the overall pattern.

Front

How do you calculate the Range of a data set?

Back

The Range is calculated by subtracting the minimum value from the maximum value.