Dec 3 B1 Mean, Median, Mode, Midrange, Weighted Mean

Front

What is the mean?

Back

The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

Front

How do you calculate the median?

Back

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

Front

What is the mode?

Back

The mode is the value that appears most frequently in a data set.

Front

What is midrange?

Back

The midrange is the average of the maximum and minimum values in a data set, calculated by adding them together and dividing by 2.

Front

What is a weighted mean?

Back

A weighted mean is an average that takes into account the importance or frequency of each value, calculated by multiplying each value by its weight, summing these products, and dividing by the total of the weights.

Front

Calculate the mean of the following data set: 1, 0, 1, 5, 6, 3, 4.

Back

Mean = (1 + 0 + 1 + 5 + 6 + 3 + 4) / 7 = 2.85.

Front

What happens to the median if a constant is added to every value in a data set?

Back

The median will increase by that constant.

Front

Identify the mode of the following data set: 12, 10, 10, 10, 13, 12, 11, 13, 10.

Back

The mode is 10.

Front

What is the shape of a bimodal distribution?

Back

A bimodal distribution has two different modes, or peaks, indicating two values that appear most frequently.

Front

If the maximum value in a data set is 20 and the minimum is 10, what is the midrange?

Back

Midrange = (20 + 10) / 2 = 15.