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Statistics & Probability
Statistics & Probability
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Basic Statistics pre-assessment
Flashcards
14 cards
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Practice quiz
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Questions
14
Answers
1
What is an outlier?
The middle number.
The difference between the greatest and least values?
A value that is much bigger or much smaller than the rest.
The average.
2
What is the first step in finding the median?
Divide by the number of values in the set.
Order from least to greatest.
Add them all up.
Cross the numbers off until you find the center.
3
How many bags of pretzels were used in this survey?
20
23
22
21
4
What is the value of the lower quartile?
43
41
48
44
5
Which of the following is NOT a statistical question?
What is your favorite after-school activity?
What day does the Chess club meet?
How long does it take students to get to school?
6
How many students were surveyed?
23
21
22
24
7
What is the Mode of the follwing data set? 2, 4, 5, 6, 3, 8, 5, 4, 3, 5
6
5
3
2
8
Which measure of center is also known as the "average?"
Mean
Median
9
Of the data: 4,6,7,8,10,2,3,5,7,6 - what is the mean?
10
5.8
8.2
6
10
What is the median?
The number that appears most often.
The difference between the greatest and least value.
The average.
The middle number.
11
What does the value 44 represent?
median
mean
upper quartile
lower quartile
12
What is the IQR (inter-quartile range)?
3
5
4
6
13
Of the data: 4,6,7,8,10,2,3,5,7,6 - what is the range?
10
8
6
14
What does the value 48 represent?
lower quartile
mean
median
upper quartile
