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Use the dot plot shown to find the mean, median, the mode, and the range of related data Class​

Use the dot plot shown to find the mean, median, the mode, and the range of related-example-1
User Austin Lovell
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1 Answer

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9 votes

Answer:

Mean : 79/15 or about 5.27

Median : 5

Mode : 9

Range : 8

Explanation:

To make this easy lets first list the data points

We have 1 , 2 , 2 , 3 , 4 , 4 , 5 , 5 , 6 , 6 , 7 , 7 , 9 , 9 , 9

Now lets find each data value

First the mean

Mean = average which = sum of data points / # of data points

Sum of data points = 1 + 2 + 2 + 3 + 4 + 4 + 5 + 5 + 6 + 6 + 7 + 7 + 9 + 9 + 9 = 79

# of data points ( count the number of dots ) = 15

So average (mean) = 79/15 or about 5.27

Next lets find the median.

The median is the middle value.

We can find the median by listing the values and then meeting at the middle of the values

So we have 1 , 2 , 2 , 3 , 4 , 4 , 5 , 5 , 6 , 6 , 7 , 7 , 9 , 9 , 9

If you go to the very middle, 5 is the middle value so median = 5

Next lets find mode

Mode is simply the value that appears most.

The value that appears the most is 9 as it appears three times which is the most out of any other value

Finally lets find the range.

Range = Largest number - Smallest number

Largest number = 9

Smallest number = 1

Range = 9 - 1 = 8

User Doletha
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