Find the mean of the data set 2 9 7 4 6 1
2 answers:
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Answer:
Step-by-step explanation:
The table shows values of for different values of
.
Let us test each equation with the values given in the table.
Equation 1:
For = 1, we get,
So, we got 1 for . But as per table, value of
should be -5.
So, equation 1 is incorrect.
Equation 2:
For = 1, we get,
So, we got -5 for . It matches with the value of table.
Let us check for another value of in order to confirm.
For , we get,
So, we got -4 for . It matches with the value of table.
So, equation 2 is the correct answer.
We can be completely sure by checking the remaining equations too.
Equation 3:
For = 1, we get,
So, we got -1 for . But as per table, value of
should be -5.
So, equation 3 is incorrect.
Equation 4:
For = 1, we get,
So, we got -7 for . But as per table, value of
should be -5.
So, equation 4 is incorrect.