Measures of Center

Front

What is the mean of a set of numbers?

Back

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

Front

How do you find the median of a set of numbers?

Back

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

Front

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

Back

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

Front

What is the median of the following numbers: 3, 1, 4, 2?

Back

The median is 2.5, calculated by arranging the numbers (1, 2, 3, 4) and averaging the two middle numbers (2 and 3).

Front

What is the mode of a set of numbers?

Back

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

Front

If the numbers are 5, 5, 6, 7, 8, what is the mode?

Back

The mode is 5, as it appears more frequently than the other numbers.

Front

What is the range of a set of numbers?

Back

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

Front

Calculate the range of the following numbers: 10, 15, 20, 5.

Back

The range is 15 (20 - 5 = 15).

Front

What is the effect of adding an outlier to a data set on the mean?

Back

Adding an outlier can significantly affect the mean, making it higher or lower depending on the value of the outlier.

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly higher or lower than the other values in a data set.