Measures of Central Tendency

Front

What is the definition of Mean?

Back

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

Front

What is the definition of Median?

Back

The middle number in a sorted list of numbers. If there are two middle numbers, the median is the average of those two.

Front

What is the definition of Mode?

Back

The number that occurs most frequently in a data set.

Front

How do you find the Median in a data set with an odd number of values?

Back

Sort the data set and select the middle value.

Front

How do you find the Median in a data set with an even number of values?

Back

Sort the data set, take the two middle values, and calculate their average.

Front

What is the definition of Range in statistics?

Back

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

Front

What is the formula for calculating Mean?

Back

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

Front

Can a data set have more than one Mode?

Back

Yes, a data set can be unimodal (one mode), bimodal (two modes), or multimodal (multiple modes).

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.

Front

What is an example of a data set with no Mode?

Back

A data set like {1, 2, 3, 4, 5} has no repeating numbers, hence no mode.