The answer is 156 after multiplying 12•12 getting 144 then adding 12 to get my answer.
Answer:
Given that The data to represent average test scores for a class of 16 students includes an outlier value of 78.
We can find sum of all 16 test scores = 84(16) = 1344
Outlier found = 78
If outlier is removed new sum = 1344-78 = 1266
Number of entries without outlier = 15
New average = 1266/12 =84.4
We find that average of new data increases.
Also whenever we remove outlier std deviation also would be reduced.
Step-by-step explanation:
Answer:
y=-6 and x=0
Step-by-step explanation:
-4x -2y = -12
4x + 8y = -24
(add the equations)
6y = -36
-36/6 = -6
y=-6
(Add y value in any of the equations)
-4x-2(6) = -12
-4x-12=-12
-4x=0
x=0
