Data Displays

Front

What is the median?

Back

The median is the middle value in a list of numbers sorted in ascending order. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the lower quartile?

Back

The lower quartile (Q1) is the median of the lower half of a data set. It represents the 25th percentile, meaning 25% of the data points are below this value.

Front

How do you find the mean of a set of numbers?

Back

To find the mean, add all the numbers together and then divide by the total number of values.

Front

What is a box and whisker plot?

Back

A box and whisker plot is a graphical representation of a data set that shows the median, quartiles, and range. It helps visualize the distribution of data.

Front

What does the range of a data set represent?

Back

The range is the difference between the highest and lowest values in a data set. It shows how spread out the values are.

Front

How do you determine the number of data points above a certain value?

Back

Count how many values in the data set are greater than the specified value.

Front

What is the upper quartile?

Back

The upper quartile (Q3) is the median of the upper half of a data set. It represents the 75th percentile, meaning 75% of the data points are below this value.

Front

What is a frequency table?

Back

A frequency table is a way to organize data that shows how often each value occurs in a data set.

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, using bars to show the frequency of data points within certain ranges.

Front

What is a line plot?

Back

A line plot is a simple way to display data along a number line, showing the frequency of each value with Xs or dots.