(a) The file CUCKOOS2.OUS contains data on the breadth (in
millimetres) of 243 cuckoo eggs. These data are grouped. What first
interval starting value and interval width would you need to use to
obtain a frequency diagram of these data that uses the same grouping
as in the file? [2]
(b) Obtain a printout of a histogram of the data using the first interval
starting value and interval width that you suggested in part (a).
Suggest one reason, with a brief explanation, why a normal
distribution might not be a suitable model for the variation in the
data. [3]
(c) You are not required to do any calculations in this part of the question.
(i) On a separate diagram, but using a similar scale, sketch a curve
that you think might be a suitable model for the variation in the
breadth of cuckoo eggs. The curve that you draw should not be a
normal curve. [2]
(ii) Explain with the aid of a sketch how you could use this model to
estimate the proportion of cuckoo eggs that are between 15 mm
and 16 mm in breadth. [3]
Subject | Mathematics |
Due By (Pacific Time) | 05/08/2013 12:00 am |
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