Mean, Median, Mode

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

What is the definition of median in statistics?

Back

The median is the middle value in a data set when the numbers are arranged in ascending or descending order.

Front

What is the definition of mode in statistics?

Back

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

Front

How do you calculate the mean of a data set?

Back

To calculate the mean, sum all the values in the data set and divide by the total number of values.

Front

How do you find the median in an odd set of numbers?

Back

To find the median in an odd set, arrange the numbers in order and select the middle number.

Front

How do you find the median in an even set of numbers?

Back

To find the median in an even set, arrange the numbers in order and calculate the average of the two middle numbers.

Front

What is the mode of the following data set: 3, 7, 3, 2, 9?

Back

The mode is 3, as it appears most frequently.

Front

Can a data set have more than one mode?

Back

Yes, a data set can be bimodal (two modes) or multimodal (multiple modes) if multiple values occur with the same highest frequency.

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 the relationship between mean, median, and mode in a skewed distribution?

Back

In a skewed distribution, the mean is pulled in the direction of the skew, the median is less affected, and the mode is the highest point of the distribution.