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WM\ guess 3, gig- Ozone. Ozone levels (in parts per billion, ppb) we; .
recorded at sites in New Jersey monthly between 19 W 5%. Music library. Students were asked how many songs
'4“;— had in their digital music library. Here’s a display
es: the responses: 12.3456789101112
jpm A’MZMoruEAr S 0ND
a) In what month was the highest ozone level ever
b) Which month has the largest IQR?
c) Which month has the smallest range?
d) Write a brief comparison of the ozone levels in
January and June. e) Write a report on the annual patterns you see in the
0128513 levels. Q 36. Choiesterol. The Framingham Heart Study recorded
the cholesterol levels of more than 1400 men. Here is an
ogive of the distribution of these cholesterol measures.
(An ogive shows the percentage of cases at or below a
certain value.) Construct a boxplot for these data and
write a few sentences describing the distribution. - 1 00
60 40 Cumulative % 20 150 225 300 375
Cholesterol (mg/dL) 150 100 ll of Students 50 0 2500 5000 7500 10000
Songs ~ , that aspect of this distribution makes it difﬁcult to i
summarize, or to discuss, center and spread? T 7i: Vihat would you suggest doing with these data if we want to understand them better? l
l 30 N
O # of Earthquakes —L
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6 6 7 6 8.6 l I n a
3.6 4.6 5.6 , _
Magnitude ‘ Jr aggro, 45m “VSJF‘WW at
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TEL YCSK'X’ ‘1 W 5( e, m above, WSWW Week one — session three Exercise to be done in class: A researcher has collected the following data on a random sample of 1000
employees that work for a pharmaceutical company. Twenty of these 1000
employees have very high positions in administration and had a major role in
starting the company. Type of position (research, sale, administrative) Annual salary in dollars Satisfaction with the new health plan (satisfied, somewhat satisfied, not
satisfied) Number of years with the company Gender Number of hours of work per week (minimum 40 and maximum 100) What would be the best way to display the following? Make a fictitious plot.
Label the X and Y axis. a)
0 8) Number of people in the different types of positions. Number of hours that the 1000 employees work per week Annual income of the twenty individuals who started the company The relationship between annual salary and satisfaction with the new health
plan The relationship between gender and type ofposition The relationship between salary level (categorized above and below the
median) with type of position The relationship between number of hours of work per week and annual
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- Fall '11