2 years ago

Find the mean for the data items

Mathematics

1 answer:

schepotkina [342]2 years ago

3 0

Answer:

4.5

Step-by-step explanation:

Given the data :

Score, x ____: 1, 2, 3, 4, 5, 6, 7, 8

Frequency, F : 1, 5, 1, 4, 4, 1, 5, 1

This is a grouped data: The mean of a grouped data is given as :

Mean (xbar) = ΣFx / ΣF

ΣFx = (1*1)+(2*5)+(3*1)+(4*4)+(5*4)+(6*1)+(7*5)+(8*1) = 99

ΣF = (1+5+1+4+4+1+5+1) = 22

Mean (xbar) = ΣFx / ΣF = 99 / 22 = 4.5

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3 years ago

Which graph shows the solution set of the compound inequality or 1.5x-1 > 6.5 or 7x+3 < -25 ?

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1.
<span>1.5x-1 > 6.5
1.5x>1+6.5
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x>5, is represented by the region to the right of the vertical line x=5

2.

<span>7x+3 < -25
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x<-4

</span>x<-4, is represented by the region to the left of the vertical line x=-4

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