Mean, Median, Mode, & Range

Front

What is the definition of mean in statistics?

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

How do you find the median of a data set?

Back

To find the median, first sort the data from least to greatest. If there is an odd number of observations, the median is the middle number. If there is an even number of observations, the median is the average of the two middle numbers.

Front

What is 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 the range of a data set?

Back

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

Front

Why is it important to sort data before finding the median?

Back

Sorting data is essential for accurately determining the median, as the median is based on the position of numbers in a sorted list.

Front

Can a data set have more than one mode?

Back

Yes, a data set can have multiple modes if two or more numbers appear with the same highest frequency.

Front

What is the formula for calculating the mean?

Back

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

Front

What happens to the mean if a new number is added to the data set?

Back

The mean will change depending on the value of the new number added; if it is higher than the current mean, the mean will increase, and if it is lower, the mean will decrease.

Front

What is the median of the following data set: 3, 5, 7, 9, 11?

Back

The median is 7, as it is the middle number in the sorted list.

Front

How do you calculate the range of the data set: 4, 8, 15, 16, 23, 42?

Back

Range = Highest value - Lowest value = 42 - 4 = 38.