In a sixth-grade class, a social measure was administered to
assess the degree of positive peer...
In a sixth-grade class, a social measure was administered to
assess the degree of positive peer relationships for each of the
students. The scores for the students were: 22, 3, 12, 2, 0, 1, 28,
5, 2, 10.
a) Find the median.
b) Find the mean.
c) Find the standard deviation.
d) Find the median if 0.7 is added to each data
point.
e) Find the mean if 0.7 is added to each data
point.
f) Find the standard deviation...
Consider these data sets:
I: 1, 3, 2, 2, 5, 4, 4, 3, 3
II: 1,...
Consider these data sets:
I: 1, 3, 2, 2, 5, 4, 4, 3, 3
II: 1, 2, 4, 1, 2, 5, 2, 5, 1, 5, 5, 3
(a) Find the mean and median for each set. Show your work.
(b) Find variance and standard deviation for each set. Show your
work.
(c) Would you be surprised to hear someone claim that these data
were drawn from the same population? (Hint: Draw a histogram for
each set. Compare the shapes.)
Consider the following data for a project to install a new
server at the Northland Pines...
Consider the following data for a project to install a new
server at the Northland Pines High School
A
4
/
B
3
A
C
6
A
D
4
B
E
1
B
F
6
B, C
G
3
D, E
H
3
F
I
5
F
J
7
G, H, I
How much slack is in each of the activities G, H, and I?
1. Consider the following data from a sample of five cases:
7,6,3,1,4, 5, 5, 10,2,8. a....
1. Consider the following data from a sample of five cases:
7,6,3,1,4, 5, 5, 10,2,8. a. What is the mean? Why (show your work
for all answers) b. What is the position of the median? Why? c.
What is the value of the median? d. What is the mean or average
deviation? e. What is the variance? f. What is the standard
deviation?
Consider the following sample: 1, 5, 5, 3, 4, 3, 6, 4, 1, a
1) If...
Consider the following sample: 1, 5, 5, 3, 4, 3, 6, 4, 1, a
1) If the mean of this numerical data set is 3.7 , find the
value of a
2) Evaluate the standard deviation the sample
3) Find P80
Question 4
4. Find the median for the following data.
6, 7, 4, 5, 3, 7,...
Question 4
4. Find the median for the following data.
6, 7, 4, 5, 3, 7, 4
a.
3
b.
4
c.
5
d.
7
Question 5
5. Thirty automobiles were tested for fuel efficiency in miles
per gallon. The following frequency distribution was obtained.
Calculate the mean.
Class Boundaries
Frequency
7.5-12.5
6
12.5-17.5
5
17.5-22.5
2
22.5-27.5
15
27.5-32.5
2
a.
552
b.
20.33
c.
610
d.
25
Question 6
6. The grades for a trigonometry exam follow....