Question

identifying the spread and center of data
number of experiments
miguel needs to find the center and the spread of the data set shown on the dot plot.
the dot plot has
there will be
the center of the data set is
the spread of data is from

Explanation:

Step1: Count the dots

Count all the dots on the dot - plot. There are 1 + 5+ 3+ 1+ 2+ 6 = 18 dots.

Step2: Determine the center position

Since there are 18 dots (an even - numbered data set), the center is between the 9th and 10th ordered data points. Counting the dots from left to right, the 9th and 10th dots fall on the value 15. So the center is 15.

Step3: Find the number of dots on each side of the center

There are 8 dots to the left of 15 and 8 dots to the right of 15.

Step4: Determine the spread

The minimum value is 5 and the maximum value is 30, so the spread is from 5 to 30.

Answer:

The dot plot has 18 dots. There will be 8 dots to the left of the center and 8 dots to the right of the center. The center of the data set is 15. The spread of data is from 5 to 30.