Envision Math 2.0: Grade 6, Volume 2
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Review

Exercise 6 Page 504

It may be easier to calculate the mean, median, mode, and range if you rearrange the numbers first.

Mean: 340
Median: 450
Mode: 0
Range: 750

Practice makes perfect

The first thing that should be done when finding the key features of a data set is rearranging the numbers from least to greatest. ccccc 0 & 0 & 450 & 500 & 750 Let's proceed to finding the mean, median, mode, and range.

Mean

The mean of a data set is calculated by finding the sum of all values in the set and then dividing by the number of values in the set. In this case, there are 5 values.
Mean=Sum of values/Number of values
Mean=0+0+450+500+750/5
Mean=1700/5
Mean=340

Median

To identify the median, we observe the middle value. ccccc 0 & 0 & 450 & 500 & 750 We can see that the middle value in this set is 450, so this is our median.

Mode

The mode of a data set is the value that occurs most frequently. ccccc 0 & 0 & 450 & 500 & 750 We can see that 0 occurs more frequently than any other value in the set, so this is the mode.

Range

The range is the difference between the greatest and least values in a set of data. For our exercise, the greatest value is 750 and the least value is 0. Range: 750- 0=750