CTinTin14
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I am revising for statistics and doing revision questions. Can you help me with this question please.
32 62 60 67 49 65 70 58 57 52 54 67 56 64 61 62 59

Count the number of votes which are within the range.

you dont have to give me the answer. thank you
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Kevin De Bruyne
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(Original post by CTinTin14)
I am revising for statistics and doing revision questions. Can you help me with this question please.
63 62 60 67 49 65 70 58 57 52 54 55 56 64 61 62 59 57 56 58

Count the number of marks which are within the range (mean -St. dev, mean + st. dev), and express this as a percentage of all the marks.

you dont have to give me the answer, i found the mean and st dev. what is next? thank you
Okay - what is the range? You've found what you need to calculate it and you're told how to calculate it in the question.

Now with the range you can do the rest of the question.
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CTinTin14
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(Original post by SeanFM)
Okay - what is the range? You've found what you need to calculate it and you're told how to calculate it in the question.

Now with the range you can do the rest of the question.
The Range is 54.2,64.3 what do i do next?
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Kevin De Bruyne
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(Original post by CTinTin14)

63 62 60 67 49 65 70 58 57 52 54 55 56 64 61 62 59 57 56 58

Count the number of marks which are within the range and express this as a percentage of all the marks.
The bit you need of your question
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CTinTin14
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(Original post by SeanFM)
The bit you need of your question
10.1? right?
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Kevin De Bruyne
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(Original post by CTinTin14)
10.1? right?
Hmm. How did you get there? I think you're making it a bit more complicated than it needs to be .

How many of those 20 numbers lie in that range?
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CTinTin14
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(Original post by SeanFM)
Hmm. How did you get there? I think you're making it a bit more complicated than it needs to be .

How many of those 20 numbers lie in that range?
can you show me how you do it your way?

Because I think I am doing it the hard way
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Kevin De Bruyne
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(Original post by CTinTin14)
The Range is 54.2,64.3

63 62 60 67 49 65 70 58 57 52 54 55 56 64 61 62 59 57 56 58
Okay. Consider 63. Is it in the range? Well, it's between 54.2 and 64.3 so yes it is. That is 1 number so far (maybe get a tally going or circle each number)

Now think about 62. Is it in the range?

Keep working your way right through the list.
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CTinTin14
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(Original post by SeanFM)
Okay. Consider 63. Is it in the range? Well, it's between 54.2 and 64.3 so yes it is. That is 1 number so far (maybe get a tally going or circle each number)

Now think about 62. Is it in the range?

Keep working your way right through the list.
Okay! Thank you!

14. What is next?
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Kevin De Bruyne
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(Original post by CTinTin14)
Count the number of marks which are within the range (mean -St. dev, mean + st. dev), and express this as a percentage of all the marks.
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