Please show your work to find the mean and standard deviation of the data. Round to the nearest tenth. 20,16,18,14,9,20,16

Question

Please show your work to find the mean and standard deviation of the data. Round to the nearest tenth. 20,16,18,14,9,20,16

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Alice 2 weeks 2021-10-13T04:28:12+00:00 1 Answer 0

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    2021-10-13T04:29:47+00:00

    Answer:

    3.6

    Step-by-step explanation:

    1. Find the Mean

    (20+16+18+14+9+20+16)/7 = 16.1

    2.For each number, subtract the Mean and square the result.

    (20-16.1)^2=15.2

    (16-16.1)^2=0

    (18-16.1)^2=3.6

    (14-16.1)^2=4.4

    (9-16.1)^2=50.4

    (20-16.1)^2=15.2

    (16-16.1)^2=0

    3. Find the Mean of those squared differences.

    (15.2+0+3.6+4.4+50.4+15.2+0)/7=12.7

    4.Take the square root of that and this is what you want.

    square root of 12.7 = 3.6

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27:3+15-4x7+3-1=? ( )