Dot Plots Mean Median Mode Range Outliers

Front

What is a dot plot?

Back

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

Front

How do you find the mean of a data set?

Back

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

Front

What is the median of a data set?

Back

The median is the middle value when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

Front

How do you find the mode of a data set?

Back

The mode is the number that appears most frequently in a data set. A data set can have one mode, more than one mode, or no mode at all.

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly higher or lower than the other values in a data set, which can skew the results.

Front

What is the range of a data set?

Back

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

Front

How do you identify an outlier?

Back

To identify an outlier, calculate the interquartile range (IQR) and determine if any values fall below Q1 - 1.5*IQR or above Q3 + 1.5*IQR.

Front

What does it mean if a data set has no mode?

Back

If a data set has no mode, it means that no number appears more than once.

Front

What is the formula for calculating the mean?

Back

Mean = (Sum of all values) / (Number of values)