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Project A: Super mart Sales prediction
Results from the multiple regression analysis:
In the first step the data was loaded into the statistical software and the sample from the data frame is shown in the table below:
## 'data.frame': 150 obs. of 14 variables:
## $ Store.No. : int 1 2 3 4 5 6 7 8 9 10 ...
## $ Sales..m : num 12.5 14.5 19 18.2 7.6 18.5 13.1 14.9 17.1 9.2 ...
## $ Wages..m : num 2.3 2.7 3.1 2.6 2 2.7 2.4 2.5 2.7 2.1 ...
## $ No..Staff : int 60 69 79 66 51 62 61 59 65 55 ...
## $ Age..Yrs. : int 10 8 7 7 15 6 7 6 8 16 ...
## $ GrossProfit..m: num 0.712 0.091 1.72 1.372 0.935 ...
## $ Adv...000 : int 171 213 255 287 112 238 124 214 215 154 ...
## $ Competitors : int 3 4 1 1 3 0 2 2 2 5 ...
## $ HrsTrading : int 110 134 98 85 72 77 100 95 112 75 ...
## $ SundayD : int 0 0 1 1 0 1 1 0 1 0 ...
## $ Mng.GenderD : int 1 1 1 1 1 1 1 1 1 0 ...
## $ Mng.Age : int 33 33 40 29 36 32 52 41 31 42 ...
## $ Mng.Exp : int 12 16 13 10 4 15 15 4 12 13 ...
## $ Car.Spaces : int 46 73 64 66 29 40 69 45 42 34 ...
After loading the data, the nest step is to check for the missing values in the data. It was found that there are no missing values in the data set. Also there are 150 observations in the data set with 13 different variables.
Questions:
Results from the multiple regression analysis shows that advertisement & promotional expenses have the strongest linear relationship with sales.
As the results shown in the above table F statistics is significant at 5 % significance level as the p value for F statistics is less than 0.05 so the overall model is significant.
On the basis of the results from the regression analysis it can be said that age, number of staff, gross profit, Mng gender and car.Spaces do not help in modeling the dependent measure.
To check the multi-collinearity problem, the Variance inflation factor (VIF) method was used and the results from the test show that VIF for the all variables are less than 10. S0, it can be said that there is no multicollinearity among the variables.
Results from the regression results shows that the value of R2 is 0.86. So it can be said that 86 % of variation in sales is explained by the independent variables included in the model. The R2 value of greater than 0.6 is considered as a good model.
On the basis of the regression results coefficients and putting the value of the independent variables as given, the predicted sales comes out to be $11.90 million.
Task two: Development of an RFM model
On the basis of the given data set ( Bilka customer data) theRFM model was performed.
Total net revenue in this case is $44369.659
On the basis of the revenue generated:
The net revenue generated by various RFM segments is shown in the excel sheet (column “M”).
Top five revenue generating RFM segments and the average revenue generated by those segments is shown in the table below. So these RFM segments should be targeted in the next email sales campaign.
Top 5 segments | |
RFM_score | Average Revenue |
333 | 55 |
323 | 12 |
313 | 10 |
223 | 8 |
322 | 6 |
Response rate for each segment is shown in the table below. The table has been created using the pivot table in Microsoft Excel.
|
|
|
|
|
Count of CustomerID | Column Labels |
|
|
|
Row Labels | 0 | 1 | Grand Total | Response Rate |
111 | 210 | 71 | 281 | 33.81% |
112 | 153 | 59 | 212 | 38.56% |
113 | 659 | 100 | 759 | 15.17% |
121 | 77 |
| 77 | 0.00% |
122 | 44 | 8 | 52 | 18.18% |
123 | 105 | 12 | 117 | 11.43% |
131 | 207 | 102 | 309 | 49.28% |
132 | 97 | 36 | 133 | 37.11% |
133 | 191 | 67 | 258 | 35.08% |
211 | 24 | 4 | 28 | 16.67% |
212 | 18 | 5 | 23 | 27.78% |
213 | 53 | 9 | 62 | 16.98% |
221 | 20 |
| 20 | 0.00% |
222 | 3 | 1 | 4 | 33.33% |
223 | 11 | 10 | 21 | 90.91% |
231 | 52 | 34 | 86 | 65.38% |
232 | 19 | 5 | 24 | 26.32% |
233 | 64 | 15 | 79 | 23.44% |
311 | 40 | 22 | 62 | 55.00% |
312 | 46 | 22 | 68 | 47.83% |
313 | 172 | 58 | 230 | 33.72% |
321 | 33 | 8 | 41 | 24.24% |
322 | 14 | 11 | 25 | 78.57% |
323 | 36 | 25 | 61 | 69.44% |
331 | 384 | 156 | 540 | 40.63% |
332 | 125 | 59 | 184 | 47.20% |
333 | 431 | 151 | 582 | 35.03% |
Grand Total | 3288 | 1050 | 4338 | 31.93% |
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