Confusion in NRR calculation in WC 2007?

Question

As far as I understand, net run rate is calculated as :
(winning teams score / overs batted) - (losing teams score / 50 overs ).
Thus we see that sri lanka made 321 against bermuda and bowled them out for 78. So it works out to (321 / 50) - (78 / 50) = 4.86, this agrees with the NRR tables shown on TV etc.

Now India after the Bangladesh match had -0.19.

In the India vs Bermuda match, India made 413 and took out Bermuda for 156. So calculating we should have (413 / 50) - (156 / 50) which is equal to 5.14. Adding -0.19 gives 4.95.

But in the statistics it is shown as 2.56. The only way to get this is if we take the calculation as (413/50) - (156/50) / 2 approximately.

How is it calculated?

Regards
Vivek

Answer 1

You are pretty close except that the divisor is not 2 or just the 50 overs of that match but the previous matches overs also.
So for example India was -.19 but after the bermuda match india has in total played 100 overs. Also one thing to remember is the divisor of overs is always pertaining to the winning team so doesnt matter if bermuda played only 20 or 30 overs even for them the 50 overs is added in the divisor, so keeping that in mind for India it is:
(413/50+50)-(156/50+50) = 2.57 + the negative of .19 we had so it landed to 2.56.

So from now onwards for any team you must add the extra 50 overs in the denominator or the winning teams overs whichever is lower.

Hence if lets say Srilkanka beats B'desh badly, Bdesh will have 100 in the denominator with high numerator and they will go into negative, that will prove very helpful to India, if they beat Srilanka by a handsome or even ok margin, as then B'desh will have to go from negative to positive with high denominator of 150 overs, hence they will have to do miracle like say post 450 or 400 on board and all out Bermuda within 50 or 80 runs which is highly impossible, hence rest assured India should have a smooth sail due to the record breaking target against Bermuda

Answer 2

India has posted the highest total in the history of the Cricket World Cups and suddenly there is a lot of interest and discussion of the Net Run Rate calculations. Surprisingly, everyone seems to be not very sure about the procedure and after getting a couple of queries regarding the same, I thought it would make sense to do a post on the all important NRR.

Step 1:

Calculating net run rate for a single match. Let me use an actual case to explain - India.

India scored 191 against Bangladesh, batting first. (In such cases the team's full quota of overs will be considered and not the actual number of overs and balls they played.)

Bangladesh scored 192 in 48.3 overs

India's Net Run Rate for that match = (191 ÷ 50) - (192 ÷ 48.5) = ( - 0.14 )

India's current net run rate would be close to 2.5

India's NRR right now
= (191+413)/50 - (192+156)/98.3

India's current net run rate would be close to 2.5

Note : 98.3 overs will be taken as 98.5 overs for
calculation as 3 balls make half an over

Answer 3

Again India is worrying about Bangladesh.. not done yet?? They have to wait What Bangladesh do??? thats a good one for Bangladesh team. Making India look at them.. and wait..for RR