74,321.00 74,321.00 73,504.00 73,424.00 73,210.00 73,193.00 73,164.00 73,164.00

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74,321.00    74,321.00 73,504.00 73,424.00 73,210.00 73,193.00 73,164.00 73,164.00 73,046.00 73,045.00 72,928.00 72,228.00 72,228.00 72,228.00 72,193.00 72,093.00 72,028.00 71,793.00 71,793.00 71,193.00 70,625.00 70,193.00 70,193.00 66,650.00 66,649.00 66,410.00 65,995.00 65,848.00 64,995.00 63,733.00 62,393.00 60,495.00 56,944.00 54,900.00 54,723.00 53,555.00 52,995.00 50,900.00 49,995.00 47,995.00 47,995.00 47,500.00 46,500.00 46,500.00 46,000.00 45,995.00 45,850.00 44,888.00 43,995.00 41,988.00 Data Analysis Project Part 3 Worod Mailings Review View Tell me what you want to do AaBbCcDc AaBbccDc AaBbC AaBbcd AaB AaBbcct AaBbCeD Normal 1 No Spac. Heading 1 Heading 2 Title Subtitle Subtle Em Paragraph Stats 270 Data Analysis Project Part 3 - Numerical Descriptive Techniques Refer to the data set approved for your group in Part 1 of the Data Analysis Project. Preform the following calculations on the data using Excel Calculate/determine the three measures of centre for the data. Are the measures the same or different? What does this tell you about the shape of your data? 1. 2. Calculate the three measures of variability for the data. 3. Give the range of values that are within 2 standard deviations of the mean'. Does this result support either Chebyshev's Theorem or the Empirical Rule-whichever applies for your data? Justify your response 4. Calculate the Pearson coefficient of skewness for the data. Does the coefficient of skewnes:s 5. Perform calculations to find the quartiles for this data. Based on the quartiles, would you describe 6. Organize your work so that it is EASY TO FOLLOW. Make sure you space items so that I do not have to A TEXT Box SHOULD BE USED FOR ALL WRITTEN EXPLANATIONS. Provide full sentence answers in your support your interpretation of shape from question 1? Explain the data as symmetrical or skewed? Justify your answer scroll all over the place to follow your analysis. Thank you ® explanations and proof-read your responses finished part 3 of the project, organize your spread sheet so that the answers for all of the questions can be clearly identified. Submit Part 3 of the project in Brightspace under the Assignment tab in the "Numerical Descriptive Techniques" on or before the deadline. End d1 4) PrtSen F9 F10 9

Explanation / Answer

1) The first three central tendancy are Mean, Mode and Median

Mean = 61083.46

Median = 66410

Mode = 72228

If Mean = Mode = Median then distribution curve is symmetric i.e Normal

But mean and median nearly equal here but mode is large

so distribution curve is Negatively skewed should be exponential.

2) The Measures of variability are Range, Standared deviation and coefficient variation

Range = 32333

Standared deviation = 10980.58

Coefficient of variation = 556.2861

3) The Main three standered deviation's are

First = mean - standered deviation = 50102.88

second = mean - 2 * standered deviation = 39122.29

Third = mean - 3 * standered deviation = 28141.71

4) The Pearson coefficient of skewness calculate using :

Coeff. of Skewness = (Mean - Mode ) / Standered deviation

= -1.01493

If Coeff. of Skewness is near to zero then distribution is symmetric means normal

If Coeff. of Skewness is negative means distribution is negatively skewed.

>>>>>>>>>>>>>>> Best Luck >>>>>>>>>>>>>>>>

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