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DerKrebs [107]
3 years ago
9

The cooking club made some pies to sell at a basketball game to raise money for the school dance. The parents association contri

buted four pies to the sale. Each pie was then cut into five pieces and sold. There were total of 60 pieces to sell. How many pies did the club make?
Mathematics
1 answer:
-BARSIC- [3]3 years ago
6 0

The answer is 12 pies. If you sell 60 pieces and there are 5 pieces in each pie then you would Have 12 pies. X = pies   5x =60   To undo this you would have to divide 60 by 5.

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The test scores of a geometry class are given below. 90, 75, 72, 88, 85 The teacher wants to find the variance for the class pop
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The data given as a whole would be called ungrouped data. Now to get the variance, you will need the formula:

s^2=   <u>Σ(x-mean)^2</u>
                   n      

x = raw data
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n = no. of observations
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Now we do not have the mean yet, so you have to solve for it. All you need to do is add up all the data and divide it by the number of observations. 

Data: <span>90, 75, 72, 88, 85        n= 5  
</span>Mean=<u>Σx</u>
            n
Mean = <u>90+75+72+88+85 </u>  = <u>410</u> = 82
                        5                        5

The mean is 82. Now we can make a table using this.

The firs column will be your raw data or x, the second column will be your mean and the third will be the difference between the raw data and the mean and the fourth column will be the difference raised to two. 

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90       82                8                      64                       
75       82               -7                      49
72       82              -10                    100
88       82                6                       36
85       82                3                       9

Now that you have a table, you will need the sum of (x-mean)^2 because the sigma sign Σ in statistics, means "the sum of."

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This will be the answer to your question. The value of the numerator of the calculation will be 258.

 
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