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Study Quiz
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1
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070973350/449925/ML7_ch12_quiz_ques1.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (17.0K)</a> The number of contracts for the Heavy Rock Paving company each month for the past year are shown. What is the mean number of contracts per month?
A)4.25
B)9.25
C)10
D)15
2
Refer to the data in question 1. What is the mode of these data?
A)4.25
B)9.25
C)10
D)15
3
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070973350/449925/ML7_ch12_quiz_ques3.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (12.0K)</a> Geoff kept track of the number of hours of math homework that he did over 11 school days. What is the range of these data?
A)4.5 h
B)3.1 h
C)1.9 h
D)1.4 h
4
Refer to the data in question 3. What is the median time spent on math homework?
A)4.5 h
B)3.1 h
C)2.1 h
D)1.9 h
5
Which value seems to be an outlier?
A)4.5 h
B)2.1 h
C)1.4 h
D)There are no outliers.
6
Refer to the data in question 3. If the outlier is removed, which measure of central tendency will change the most?
A)mean
B)median
C)mean and mode
D)median and mode
7
Rebecca owns a clothing store, and keeps data on the number of each size of athletic socks sold. For ordering purposes, what is the best measure of central tendency?
A)mean
B)median
C)mode
D)range
8
The lowest value in a data set is 5.6. The range is 3.8. What is the highest value?
A)1.8
B)3.7
C)5.6
D)9.4
9
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070973350/449925/ML7_ch12_quiz_ques9.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (5.0K)</a> On a 3-day cross-country flight in his vintage aircraft, Seymour flew a total of 1200 km on the first day, 1050 km on the second day, and 1330 km on the third day. His total flying time was 18 h. What was the mean speed of the airplane over the entire trip, to the nearest km/h?
A)195 km/h
B)199 km/h
C)206 km/h
D)209 km/h
10
Sunjay received a mean of 70% in mathematics. He recalled that four of his tests had marks of 70%, 72%, 78%, and 68%. What was the mark on the fifth test?
A)62%
B)65%
C)70%
D)75%





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