Question

Use the dot plot to answer the question.

A dot plot that has 3 dots at 1, 4 dots at 2, 3 dots at 3, 4 dots at 4, 5 dots at 5, & 3 dots at 6.


What is the mean of the data set in the dot plot?

Enter your answer as a number rounded to the nearest tenth, like this: 42.5

Answer 1

Answer:

The mean of the data set = $3.6$  

Step-by-step explanation:

Please check the dot plot which is attached below.

As we know that we can determine mean from the dot plot by adding the numbers and then divide the resulting sum by the number of addends.

From the dot plot it is clear that:

• 3 dots appear at 1

• 4 dots appear at 2

• 3 dots appear at 3

• 4 dots appear at 4

• 5 dots appear at 5

• 3 dots appear at 6

So adding all the dots with respect to their values on the plot number by the total number of dots.

Thus

Mean = (1+1+1+2+2+2+2+3+3+3+4+4+4+4+5+5+5+5+5+6+6+6) ÷ 22

          $=\:\frac{79}{22}$

          $= 3.6$

Hence, the mean of the data set = $3.6$