1. COLONIAL BROADCASTING: A case study

2. AVERAGE RATING FOR CBC

3. AVERAGE RATINGS
ABN
BBS
14.76
12.668

4. DESCRIPTIVE STATISTICS

5. CBC: LINE GRAPH

6. HYPOTHESIS FOR ‘NO OF STARS’
  Ho: mu 1= mu2                 H1: mu1 is not equal to mu2        
the test statistic will be        
  WITH 95% THE CRITICAL t VALUE WILL BE WITH 28 DEGREES FREEDOM    
CLEARLY WE ACCEPT Ho
here is no statistical difference between average ratings of moves with 1 star or 0 stars.                    

7. MULTIPLE REGRESSION WITH FACTS AND STARS
 ratings= *D *D2    
where D1: dummy = 0 and 1for fact  
  D2: dummy for 0 and 1 star    
the explanatory power of the variables is seen
in terms of R2.this value is  which means that only 13.9% of the varaiation in ratings is explained by no of facts and stars.  

8. NETWORK ANALYSIS
Comparing on three parameter-ratings, previous ratings and competition we can see that
ABN has highest average ratings
ABN has highest average previous ratings
The dispersion in these variables in highest for ABN as measured by coefficient of variation.
So ABN has got consistent high ratings but the variation in ratings is highest. In this sense ABN is ‘best’.

9. PREDICTION OF RATINGS: CBC DATA
Using CBC data we can argue that the use of trend to predict average ratings in a month is NOT advisable as the explanatory power of the trend line is extremely low at 4.6% only.

10. USE OF STARS: CBC DATA
There is no significance to no of stars in a movie in a statistical sense.

11. SIGNIFICANCE OF FACTS vs STARS: REGRESSION ANALYSIS
Individually both the no of facts and no of stars are statistically significant in explaining average ratings.
Overall, if we combine the two variables then they explain only 13.9% of the variation in ratings.
Clearly we need more variables to explain the variations in average ratings.

12. FACT vs STAR ratings= 12.56846 +1.799*D1 +1.25867*D2
Fact contributes to ratings: A 1 unit rise in fact causes ratings to rise by 1.799
Stars contribute to ratings. : an additional star contributes to ratings
So the effect of FACT is higher

13. FACT + 0 STAR vs FICTION+1 STAR
We do not expect fact based movies with no stars to get any statistically different average ratings from fiction based movies with 1 star .