What is the average of the following observations?
2.5,3.25,4.75,7.5,3,4,3
- A3.5
- B4
- C4.18
- D4.5
Solution & Step-by-step Explanation
To find the average, we first compute the sum of all observations and then divide by the total number of observations.
Number of observations (n) = 7
Sum of observations:
Sum=2.5+3.25+4.75+7.5+3+4+3
Sum=2.5+8.0+7.5+3+4+3
Sum=18.0+10=28
Now, calculate the average:
Average=
n
Sum
=
7
28
=4
Number of observations (n) = 7
Sum of observations:
Sum=2.5+3.25+4.75+7.5+3+4+3
Sum=2.5+8.0+7.5+3+4+3
Sum=18.0+10=28
Now, calculate the average:
Average=
n
Sum
=
7
28
=4