1
Test 1
Math 1107—Spring 2008
The following graphs and data screens are from our heart rate data that we collected in class;
This is the plot for the 9:30
a.m. heart rates.
It is the histogram when Zoom
9 is used.
We are going to call this
skewed
and
answer the rest of the questions about 9:30 a.m.
accordingly.
Use
x
= 72.94 and s = 9.07 for the calculations.
This is the plot for the 11
am heart rates.
It matches the stem and leaf plot
on Day 3 p.4.
We are going to call this
relatively symmetric
and answer the rest of the
questions about 11 a.m. accordingly.
Use
x
= 70.71 and s = 8.25 for the calculations.
1.
Give the center for each data set and interpret the measure:
2.
Give the spread for each data set and interpret the measures for each.
Show the calculations for
the IQR if that is what you choose.
3.
(a) Using a zscore for each data set, tell me if a heart rate of 66 bpm more likely to happen in
the 9:30 a.m. class or in the 11 a.m. class? Make the conclusion in a sentence.
Show your
calculations.
Remember to use the rounded numbers (under the TI screens) for
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 Spring '08
 Hardy
 Math, Statistics, Normal Distribution, Standard Deviation, a.m. data

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