Multiple choice questions
1.
Which is true about bar charts?
A.
A bar chart is for quantitative data.
B.
A bar chart has bars that touch.
C.
A bar chart has categories on the xaxis
D.
Both b and c are correct.
Answer
:
2.
A researcher collected data from 1000 undergraduate students on how many hours they spend
studying per week for their classes. The majority of the students study around 8 hours per week,
whereas only a few students study more than 18 hours per week. Which of the following
statements is
true
:
A.
The mean for this distribution is larger than the median since the distribution is
negatively skewed.
B.
The mean for this distribution is larger than the median since the distribution is positively
skewed.
C.
The mean for this distribution is smaller than the median since the distribution is
negatively skewed.
D.
The mean for this distribution is smaller than the median since the distribution is
positively skewed.
Answer
:
3.
Suppose we want to learn something about Major League batting averages over the past five
seasons. If 100 of the players who played in all of the past five seasons are chosen and their
collective batting average was 0.274, what is true about that value?
A. 0.274 is the batting average of the population in question.
B.
The value does not give us any real information.
C.
This is the data that we gathered
D.
This is one of our summary statistics from the sample.
Answer
:
4.
The grade distribution for a Spanish exam was normal, with a mean of 72 and a standard
deviation of 8.
The distribution for a Statistics exam was also normally distributed, but with a
mean of 74 and a standard deviation of 6.
A particular SDSU student got a 68 on the Spanish
exam and a 70 on the Statistics exam. On which exam did the student do better, relative to the rest
of the class?
A.
Statistics
B.
Spanish
C.
They did equally well on both exams
D.
There is not sufficient information provided to answer the question.
Answer
:
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Below is information about student success in a math class last semester.
Use information from the
table to answer questions 56.
Student Outcome
Student Gender
Pass
Fail
Total
Males
605
224
829
Females
583
281
864
Total
1188
505
1693
5.
Among all students in the math class last semester, what proportion were female students who
passed the course?
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 Spring '10
 rotar
 Statistics, Standard Deviation, Mean, Simple random sample, desktop computer

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