Compare Dot Plots

Front

What is a dot plot?

Back

A dot plot is a statistical chart that consists of dots plotted above a number line, representing the frequency of data points.

Front

What does it mean to have an outlier in a data set?

Back

An outlier is a data point that differs significantly from other observations in a data set, often appearing far away from the rest of the data.

Front

How do you find the median of a data set?

Back

To find the median, arrange the data points in numerical order and identify the middle value. If there is an even number of data points, the median is the average of the two middle values.

Front

What is the interquartile range (IQR)?

Back

The IQR is a measure of statistical dispersion, calculated as the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

What does the median represent in a data set?

Back

The median represents the middle value of a data set when it is ordered from least to greatest, indicating the central tendency.

Front

How can you compare two dot plots?

Back

You can compare two dot plots by examining their medians, ranges, and the presence of outliers to understand differences in data distribution.

Front

What is the significance of the median in comparing two groups?

Back

The median helps to understand the central tendency of each group, allowing for a comparison of typical values between the two.

Front

What does it mean if two data sets have the same median?

Back

If two data sets have the same median, it indicates that the central values of both sets are equal, but it does not imply that the data distributions are identical.

Front

How do you calculate the difference between two medians?

Back

To calculate the difference between two medians, subtract the smaller median from the larger median.

Front

What is a frequency in a dot plot?

Back

Frequency in a dot plot refers to the number of times a particular value appears in the data set, represented by the number of dots above that value.