Dec 4 B2 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 numbers together and dividing by the count of numbers.

Front

What is the median?

Back

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

Front

What is the mode?

Back

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

Front

What is the midrange?

Back

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

Front

What is a weighted mean?

Back

The 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 then dividing by the total of the weights.

Front

Can there be more than one mode?

Back

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

Front

What does it mean if a distribution is skewed left?

Back

A left-skewed distribution has a longer tail on the left side, indicating that there are a few lower values that pull the mean down.

Front

What does it mean if a distribution is skewed right?

Back

A right-skewed distribution has a longer tail on the right side, indicating that there are a few higher values that pull the mean up.

Front

What is a symmetric distribution?

Back

A symmetric distribution is one where the left and right sides of the distribution are mirror images of each other, meaning the mean, median, and mode are all equal.

Front

What is a bimodal distribution?

Back

A bimodal distribution has two different modes, meaning there are two values that appear with the highest frequency.