Given the absolute cumulative frequency table:

Edad Fi
[0, 2) 4
[2, 4) 11
[4, 6) 24
[6, 8) 34
[8, 10) 40

1.

Calculate the arithmetic mean and standard deviation.

2.

Calculate the difference between the values that are the 10 central ages?

3.

Create the respective absolute cumulative frequency polygon.

  xi fi Fi xi · fi x · fi
[0, 2) 1 4 4 4 4
[2, 4) 3 7 11 21 63
[4, 6) 5 13 24 65 325
[6, 8) 7 10 34 70 490
[8, 10) 9 6 40 54 486
    40   214 1368

Mean and Standard Deviation

2

The 10 students represent 25% of the central distribution.

Find: P37.5 y P62.5.

The 10 central ages are in the interval: [4.61, 6.2] .

Frequency Polygon

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Emma

I am passionate about travelling and currently live and work in Paris. I like to spend my time reading, gardening, running, learning languages and exploring new places.