PART A ( MANUAL THROUGH FORMULAS: please show your work for partial credit) (10 points)
Age (years) Frequency
Q.1 Calculate the mean age in the data set of ages above.
Q.2 Calculate the median age in the data set of ages above.
Q.3 Calculate the mode of the age in the data set of ages above
(Note: remember that the column 2 of the data set shows frequency of each age, which means you have to find out the total number of ages first……)
Q.4. Calculate the standard deviation of the of the ages data set.
PART B (Excel ) (10 points)
Below is the monthly value of Dow Jones Index for one year from Jan 1st 2018 to Jan 1st 2019. Copy this data in excel and calculate the following by using the relevant formulae in excel.
d) Standard deviation
PART C (Excel_ Data Analysis Tool Pak) (10 points)
Use the Dow Jones Index data in the part B, and perform descriptive statistics on it by using the Data
Analysis Tool Pak Add in. Display your summary statistics. Also interpret the performance of the index in
the year 2018 by analyzing the mean, median, mode, variance , standard deviation and other measures of descriptive statistics.
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