Using Formulas to Calculate Summary Statistics In completing this worksheet answ

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Using Formulas to Calculate Summary Statistics In completing this worksheet answers are to be written on the blank lines. Where additional lines are drawn under the answer you are required to discuss or explain briefly how your calculations are done. The following Workbook handouts are to be used to complete the problems in this section. These are found under Workbook in the Document Sharing Center on the left side of the MyStatLab Home page. Rounding Rules Editing Data Frequency Distributions .Analyzing Data 80 65 85 95 70 86 8 students received the following test scores (x): 78 74·They decided to find their average performance-, and the standard deviation S. Use the formulas given and complete the tables when necessary, then do the calculations. Write your final answers correct to one decimal p lace (1 more than you have in the raw data). data into list 1 and use the instructions found in the Analyze Data From One Variable Put the handout. Do Examples 1-5. The sample mean is (x bar) . nis the sample size; Count how many values of x you are given, n 8 To calculäte, you sum the values of x given Example 1: Calculate the mean score,

Explanation / Answer

The formula to find the sample mean Score is: = ( xi ) / n

=(78+80+65+85+95+70+86+74)/8

=79.125

Hope this will be helpful. Thanks and God Bless You :-)

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