AQA A2 Mathematics MS2B Statistics 2B - 21st June 2016

Any workings for the last question? Realized I had the wrong mean value right after the exam. After all those nasty questions, am I gonna lose tons of marks on this one?😭😭😭


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I had to rush it so may have got it wrong, but you do the integral of x[f(x)] for each part of the graph, Using the limits given for each part. You then add them together. At least that's what I did. My answer was 3 point something

What were the answers for the four market where they gave you a CI and you had to find Sd and the mean? I got the sd, was the mean the same as x bar?

I had to rush it so may have got it wrong, but you do the integral of x[f(x)] for each part of the graph, Using the limits given for each part. You then add them together. At least that's what I did. My answer was 3 point something

What were the answers for the four market where they gave you a CI and you had to find Sd and the mean? I got the sd, was the mean the same as x bar?

I had to rush it so may have got it wrong, but you do the integral of x[f(x)] for each part of the graph, Using the limits given for each part. You then add them together. At least that's what I did. My answer was 3 point something

What were the answers for the four market where they gave you a CI and you had to find Sd and the mean? I got the sd, was the mean the same as x bar?

Anyone got any idea for distribution of marks for the last question? I'm literally freaking out


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5 for the graph and then another 5 for the rest of it I think, but I might be wrong

What did you guys get for the last 3 marks on question 1? I got 0.622. For the last question I got 73/24 which is 3.042

What did you guys get for the last 3 marks on question 1? I got 0.622. For the last question I got 73/24 which is 3.042

The pdf graph I got was a straight line of x=0.25 from 1 to 4 and then a straight diagonal line between 4 and 6 to 0.

I completely messed it up originally as I thought it wanted F(x) and not f(x)

did anyone else get 73/24 for the very last question which is like 3.04167

What do people think 70/75 will be?

For the contingency tables do you use yates's and V=1?

I must have got the graph wrong cuz my graph was two broken lines. I just missed my a* in S2 I think. God I'm so desperate. But I did difeferentiation in (I) and did integration xf(x) in (ii), will I get at least 5 marks out of 10?


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