Mean, Mode, Median

Front

What is the definition of the mode in a data set?

Back

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

Front

How do you calculate the median of a data set?

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 formula for calculating the mean of a set of numbers?

Back

The mean is calculated by adding all the numbers together and dividing by the total number of values.

Front

What is the mode of the following data set: 4, 1, 2, 2, 3, 4, 4?

Back

The mode is 4, as it appears most frequently.

Front

If a data set has no repeating numbers, what is the mode?

Back

If there are no repeating numbers, the data set is said to have no mode.

Front

What is the median of the following data set: 3, 5, 1, 4, 2?

Back

First, arrange the numbers in order: 1, 2, 3, 4, 5. The median is 3, the middle value.

Front

How do you find the mean of the numbers 10, 20, 30, 40?

Back

Add the numbers: 10 + 20 + 30 + 40 = 100. Then divide by the number of values: 100 / 4 = 25.

Front

What does it mean if the mean is significantly higher than the median in a data set?

Back

It indicates that there may be outliers in the data set that are skewing the mean upwards.

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

How can you determine if a data set is skewed?

Back

If the mean is greater than the median, the data set is positively skewed. If the mean is less than the median, it is negatively skewed.