Mean Median Mode & Dot Plots

Front

What is the definition of Mean?

Back

The Mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

What is the definition of 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 definition of Mode?

Back

The Mode is the number that appears most frequently in a data set.

Front

How do you find the Median of the numbers: 4, 2, 7, 4, 3?

Back

First, sort the numbers: 2, 3, 4, 4, 7. The median is 4.

Front

How do you find the Mode of the numbers: 5, 0, 9, 9, 3, 0, 5, 5, 4?

Back

The number 5 appears most frequently (three times), so the mode is 5.

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 interpret a Dot Plot?

Back

In a Dot Plot, each dot represents one occurrence of a value. The number of dots above a value indicates how many times that value occurs in the data set.

Front

What is the relationship between Mean, Median, and Mode in a normal distribution?

Back

In a normal distribution, the Mean, Median, and Mode are all equal and located at the center of the distribution.

Front

How do you calculate the Mean of the numbers: 4, 2, 7, 4, 3?

Back

Add the numbers: 4 + 2 + 7 + 4 + 3 = 20. Divide by the count (5): 20 / 5 = 4.

Front

What is the significance of the Median in a data set?

Back

The Median provides a measure of central tendency that is not affected by extreme values (outliers), making it a better indicator of the center for skewed distributions.