Do Homework Cristina Munog Mocorkle MA120 Basic Concepts of Statistcs MA120OUDs2

Question

Do Homework Cristina Munog Mocorkle MA120 Basic Concepts of Statistcs MA120OUDs2A201 Homework: Unit 3: Homework Score: 0 of 2 pts 6 of 12 complete) v HW Score: 2496, 3.6 of 15 pts 3.3.38 Question Help Find the standard deviation, s, of sample data summarized in frequency table given below by using the formula below, x class midpoint, frepresents the dass frequency, and n represents the total number of sample values Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 90 15 standard deviaton. Round to one decimal place as needed) Enter your answer in the answer bax and then click Check Answer. 1 mining

Explanation / Answer

Step by Step Calculation:

         (M . F)
µ =  __________
           F
Total = 34.5 x 1 + 44.5 x 15 + 54.5 x 41 + 64.5 x 23 + 74.5 x 6 + 84.5 x 4 = 5205
F = 90
Mean = 5205/90
Mean = 57.8333

^2 = (F . M^2 - n * µ^2)/(n-1)
F . M2 = 1 x 34.5^2 + 15 x 44.5^2 + 41 x 54.5^2 + 23 x 64.5^2 + 6 x 74.5^2+ 4 x 84.5^2
= 310222.5
^2 = (310222.5 - 90 x 57.8333^2)/ 89
^2 = 103.3746

= 10.1673

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