Math 2040 Exam 1 fall 2009
Name_____________________________
(Show your work to receive credit
)
1) Circle all the following charateristics that apply to the histogram
a) unimodal
b) bimodal
c) skewed to the right
d) skewed to the
left
2) According to the textbook which of the following measures is preferred
as the measure of central location for qualitative dat. Circle your
answer.
a) mean
b) median
c) mode
3) When sampling from a normal
distribution which of the following
measures
is most stable (i.e. has the least variation between samples).
Circle your answer.
a) mean
b) median
c) mode
4) For the data represented in the above histogram circle the best
answer:
a) The mean is likely larger than the median.
b) The median is likely larger than the mean.
c) It is not possible to determine if the median or mean will be larger.
__________
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5)
For the following data construct a two digit stem display with one
digit leaves and arrange the leaves on each stem according to size.
263 270 272 242 263 251 284 265 230 267 271 254 283 269
240 284
6) What is the mean
of the data in 4)
______________
What is the median of the data in 4)
______________
What is(are) the
mode(s)
of the data in 4)
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 Fall '10
 RaySievers
 Math, Statistics, Normal Distribution, Standard Deviation, Mean

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