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Q 1/12
Score 0
School administrators collect data on students attending the school. Which of the following variables is quantitative?
120
whether the student is in Honors classes
class (freshman, soph., junior, senior)
whether the student has taken the SAT
grade point average
Q 2/12
Score 0
Which of the following variables would most likely follow a Normal model?
120
scores on an easy test
heights of singers in a co-ed choir
weights of adult male elephants
family income
12 questions
Q.
School administrators collect data on students attending the school. Which of the following variables is quantitative?
1
120 sec
Q.
Which of the following variables would most likely follow a Normal model?
2
120 sec
Q.
An instructor has kept records on grades that students have earned in his class. If he wants to examine the percentage of students earning the grades A, B, C, D, and F during the most recent term, which kind of plot could he make?
3
120 sec
Q.
Which is true of the data shown in the histogram? I. The distribution is approximately symmetric.
II. The mean and median are approximately equal.
III. The median and IQR summarize the data better than the mean and standard deviation.
4
120 sec
Q.
Suppose that a Normal model described student scores in a history class. Parker has a standardized score (z-score) of +2.5. This means that Parker
5
120 sec
Q.
Which of the following summaries are changed by adding a constant to each data value?
I. the mean
II. the median
III. the standard deviation
6
120 sec
Q.
The high temps for 50 cities are shown in the boxplot. Which statement is true about this data set?
7
120 sec
Q.
A movie theater kept track of the attendance on Fridays and Saturdays. The results are shown in the box plots below. Which conclusion can be drawn from the box plots?
8
120 sec
Q.
Aaron measured the heights of his plants. The heights, in inches, are shown below.
10, 11, 13, 15, 17, 18, 19, 20, 20, 23, 25, 27
What is the value of the lower quartile?
9
120 sec
Q.
A swim instructor had a contest to see how many seconds her students could hold their breath underwater. The results from the contest are shown in the list below.
17, 34, 40, 41, 50, 50, 53, 56, 57, 58, 64, 70
Which histogram represents the results from the contest?
10
120 sec
Q.
Kitric created this bar graph to show the average high and low temperatures for each season in Queenstown, New Zealand. According to the data in the graph, which statement is true?
11
120 sec
Q.
Students were surveyed about book bags. The results are shown above. A student concluded that, for those in the survey, females are more likely to carry a book bag than males. Which explanation best supports the studentâs conclusion?
