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    I'm struggling with part 4e. I think the new graph should have a negative skew because the mode is greater than the mean but the answer in the mark scheme doesn't seem to have a negative skew. Can someone please help me figure it out? Thank you in advance.
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    I haven't tried to do the question but if there much difference between your mean and mode? Because if they're very close maybe you're expected to treat them as equal and draw a normal distribution.
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    (Original post by Keira Larkin)
    I'm struggling with part 4e. I think the new graph should have a negative skew because the mode is greater than the mean but the answer in the mark scheme doesn't seem to have a negative skew. Can someone please help me figure it out? Thank you in advance.
    It would be a ‘uniform distribution’ but if you haven’t done that chapter yet obviously you wouldn’t know that so dont worry about it
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    (Original post by Keira Larkin)
    I'm struggling with part 4e. I think the new graph should have a negative skew because the mode is greater than the mean but the answer in the mark scheme doesn't seem to have a negative skew. Can someone please help me figure it out? Thank you in advance.
    There is a whole branch of mathematics devoted to the study of call centre loading and similar, but I don't think knowledge of that will be expected for one point! Commonsense would suggest that the probability density function probably shouldn't increase with call duration and probably shouldn't have a hard cut-off at ten minutes. I would suggest either something that decreases with call duration, but without a hard cutoff, or something with a hump at some value like three minutes and then gradually tailing off for longer call durations.
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    (Original post by old_engineer)
    There is a whole branch of mathematics devoted to the study of call centre loading and similar, but I don't think knowledge of that will be expected for one point! Commonsense would suggest that the probability density function probably shouldn't increase with call duration and probably shouldn't have a hard cut-off at ten minutes. I would suggest either something that decreases with call duration, but without a hard cutoff, or something with a hump at some value like three minutes and then gradually tailing off for longer call durations.
    That makes sense. Thank you!
 
 
 
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