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Statistics help

http://filestore.aqa.org.uk/subjects/AQA-MS-SS1B-W-QP-JUN11.PDF

Hi can you please show me how to work out question 1bii

using my calculators i keep getting 4.50 which is apparently not the answer
Sorry you've not had any responses about this. :frown: Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get responses. :redface:

I'm going to quote in Puddles the Monkey now so she can move your thread to the right place if it's needed. :h: :yy:

Spoiler

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Avatar for jakecre8
jakecre8
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Original post by cilla_e
http://filestore.aqa.org.uk/subjects/AQA-MS-SS1B-W-QP-JUN11.PDF

Hi can you please show me how to work out question 1bii

using my calculators i keep getting 4.50 which is apparently not the answer


Okay, in your calculator, you need to enter the table given. You also need to include the two extreme values. When you do this, you will get the answer required. However, you need to input the midpoints on the figures that have a range. Then just use your calculator to find the mean.

For standard deviation, you will be using the table with the extremes again. However, just use the standard deviation function which will generate an output of 4.217...

I hope this helps!
Original post by cilla_e
http://filestore.aqa.org.uk/subjects/AQA-MS-SS1B-W-QP-JUN11.PDF

Hi can you please show me how to work out question 1bii

using my calculators i keep getting 4.50 which is apparently not the answer


There is an S1 Thread for AQA set up here for you to post in :smile:
http://www.thestudentroom.co.uk/showthread.php?t=3357633

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