Find the mean salary of 60 workers of a factory from the following table.
salary
number of workers
3000
4000
5000
6000
7000
8000
9000
1
total
16
12
10
8
6
4
3
1
60

To find the mean (average) all the # of workers and divide it by the data points. One way you can do this is through a calculator or even Excel spreadsheet.

Step-by-step explanation:

1) Add all them up

2) Divide them by the # of data points

i’m here for points.

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)