Question

According to the chart, from 1986-1996, unintentional drug overdose deaths per 100,000 population began to rise. The numbers for each year are, roughly, 2, 1, 2, 2, 1, 2, 2, 3, 3, 3, 3. What is the mean of these statistics? 24 2.18 24.18 2

Answer 1

2.18

Explanation:

Mean is the average of any set of numbers given in a sample. It is calculated by the summing the numbers of dividing by the total number in the sample.

Sum of overdose:

= 2+1+2+2+1+2+2+3+3+3+3=24

Number of overdose sample = 11

Mean = Sum of overdose / number

Mean = 24 / 11 = 2.18

Therefore the mean of these statistics is 2.18

Answer 2

2.18

Explanation:

The mean is the most familiar average. It is defined as a value obtained by dividing the sum of all observations by their number. It is calculated as

Mean = Sum of all the observations/ Number of the observations

Mean= x₁+x₂+...............+xₐ/n

Where x₁,x₂,...............,xₐ refer to different values of x and n is the sample size.

Mean= 2+1+2+2+2+2+1+3+3+3+3/11= 24/11= 2.18

The mean may correspond to a population or a sample from a population.

The population mean is a fixed quantity where as the sample mean is a variable quantity because different samples from the same population tend to have different means.