# Regents Exam Questions A2.S.4: Dispersion 4 Page 1 Unit 13 Day 2

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```Regents Exam Questions A2.S.4: Dispersion 4
Unit 13 Day 2 HW – VISCA – Alg 2 w Trig
Page 1
Name: __________________________________
A2.S.4: Dispersion: Calculate measures of dispersion (range, quartiles, interquartile
range, standard deviation, variance) for both samples and populations
1 The scores of one class on the Unit 2 mathematics
test are shown in the table below.
3 The table below shows the scores that a class of
students received on their latest review quiz.
Find the standard deviation of these scores to the
nearest tenth.
Find the population standard deviation of these
scores, to the nearest tenth.
4 Find, to the nearest tenth, the standard deviation of
this set of data.
2 The accompanying table shows the scores on a
classroom test.
5 Using the scores in the table below, find the
standard deviation to the nearest tenth.
What is the population standard deviation for this
set of scores?
1) 10.2
2) 10.4
3) 25
4) 88
Regents Exam Questions A2.S.4: Dispersion 4
Unit 13 Day 2 HW – VISCA – Alg 2 w Trig
6 The table below shows the set of score data for an
English examination.
Find the standard deviation of these scores to the
nearest tenth.
Page 2
Name: __________________________________
9 Using the accompanying set of data, find the
standard deviation to the nearest tenth.
10 A random sample of readings was taken at the site
of a radioactive spill. In the information chart
below, x is the contamination level in microcuries
and f is the number of readings at each
contamination level. Compute the sample standard
deviation of the contamination levels to the nearest
tenth.
7 The table below shows the scores of 40 students on
Find the standard deviation to the nearest tenth.
11 The table below shows the grades for a college
statistics class.
8 The table below shows raw scores on an 80question entrance examination. Find the standard
deviation of these examination scores to the nearest
tenth.
Find the mean of the data. Find the standard
deviation to the nearest tenth.
Regents Exam Questions A2.S.4: Dispersion 4
Unit 13 Day 2 HW – VISCA – Alg 2 w Trig
Page 3
Name: __________________________________
12 The table below represents the weights of 10 girls
from the seventh grade class. Find the standard
deviation of these weights to the nearest tenth.
14 The table below represents scores earned by
students on a math exam. Find the standard
deviation of these scores to the nearest tenth.
13 The table below shows the grades for a class of
students in Course III math.
15 The table below represents the weight, in pounds,
of the students in Mrs. Grabenstein’s homeroom.
Find , the mean of the data. Find, to the nearest
tenth, the standard deviation of the data. Which
statement is true with this given set of data?
(1) median > mode
(2) median = mode
(3) median < mode
Using this set of data, find the mean, median, mode,
and standard deviation to the nearest tenth.
16 The table below shows the height in inches of ten
Find the mode, median, and standard deviation of
these heights to the nearest tenth.
Regents Exam Questions A2.S.4: Dispersion 4
Unit 13 Day 2 HW – VISCA – Alg 2 w Trig
17 Using the following set of data, find the mean and
the standard deviation to the nearest tenth.
Page 4
Name: __________________________________
19. The table below shows the first-quarter
averages for Mr. Harper’s statistics class
18 080039siii, A2.S.4
Find, to the nearest tenth, the standard deviation for
the following set of data.
What is the population variance for this set of data?
1) 8.2
3) 67.3
2) 8.3
4) 69.3
Regents Exam Questions A2.S.4: Dispersion 4
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