Question

In: Math

Number Year Gross Income Price Index Adjusted Price Index Real Income 1 1991 50,599 136.2 1.362...

Number Year Gross Income Price Index Adjusted Price Index Real Income
1 1991 50,599 136.2 1.362 37150.51
2 1992 53,109 140.3 1.403 37853.88
3 1993 53,301 144.5 1.445 36886.51
4 1994 56,885 148.2 1.482 38383.94
5 1995 56,745 152.4 1.524 37234.25
6 1996 60,493 156.9 1.569 38555.13
7 1997 61,978 160.5 1.605 38615.58
8 1998 61,631 163.0 1.630 37810.43
9 1999 63,297 166.6 1.666 37993.40
10 2000 66,531 172.2 1.722 38635.89
11 2001 67,600 177.1 1.771 38170.53
12 2002 66,889 179.9 1.799 37181.21
13 2003 70,024 184.0 1.840 38056.52
14 2004 70,056 188.9 1.889 37086.29
15 2005 71,857 195.3 1.953 36793.14

The data from Exhibit 3 is also in the Excel file income.xls on the course website. Use Excel, along with this file, to determine Mrs. Bella’s real income for the last fifteen years. Do this by first converting each price index from percent by dividing by 100. Then, divide gross income by your converted (adjusted) price index. Using Excel, find the mean, median, standard deviation, and variance of her past real income. Explain the meaning of these statistics. Can you use mean income to forecast future earnings? Take into account both statistical and non-statistical considerations.

Solutions

Expert Solution

On the basis of the information given in the table, Mrs Bella's real income is calculated in the last column of the following table by calculating adjusted price index. And then mean , median , variance and S. D. is calculated on the basis of her past real income

(i) Mrs. Bella's average real income in past 15 years is 37760.48

(ii) Real income which divide the real income set in to two equal part is median value =37810.43

(iii) Amount of deviation of the real income of Mrs. Bella from mean value is S.D.=653.43


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