Unit 1 Data: Review

Front

What is the definition of median?

Back

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

Front

How do you calculate the mean of a data set?

Back

To calculate the mean, add all the numbers in the data set together and then divide by the total number of values.

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, which can skew the results.

Front

Find the median of the data set: 10, 20, 30, 40, 50.

Back

30

Front

Calculate the mean for the data set: 5, 10, 15, 20, 25.

Back

15

Front

What is the formula for finding the median in an even set of numbers?

Back

(n/2 + (n/2 + 1))/2, where n is the number of values.

Front

Identify the outlier in the data set: 1, 2, 3, 4, 100.

Back

100

Front

What is the range of a data set?

Back

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

Front

Find the median of the data set: 3, 5, 7, 9, 11, 13.

Back

8 (average of 7 and 9).

Front

Calculate the mean for the data set: 2, 4, 6, 8, 10, 12.

Back

7.