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 set of ungrouped sample data. Answer
parts A through D.
5 4 4 4 0 2 3 7 7 8&nb
Consider the following set of ungrouped sample data. Answer
parts A through D.
5 4 4 4 0 2 3 7 7 8
(A) Find the mean and standard deviation of the ungrouped
sample data.
x=
(B) What proportion of the measurements lies within 1 standard
deviation of the mean? Within 2 standard deviations? Within 3
standard deviations?
(C) Based on your answers to part (B), would you conjecture
that the histogram is approximately bell shaped? Explain.
(D) To confirm your conjecture, construct a histogram with the
class interval...
Consider the following data: 10, 2, 1, 4, 5, 3, 4.
a) Find the median.
b)...
Consider the following data: 10, 2, 1, 4, 5, 3, 4.
a) Find the median.
b) Find the mean.
c) Find the standard deviation.
d) Find the median if -3.2 is added to each data
point.
e) Find the mean if -3.2 is added to each data
point.
f) Find the standard deviation if -3.2 is added to
each data point.
g) Find the median if each data point is
multiplied by -9.2.
h) Find the mean if each data...
a. find the mean and standard deviation of the following set of
ungrouped sample data: 4,...
a. find the mean and standard deviation of the following set of
ungrouped sample data: 4, 3, 5, 2, 3, 1, 2, 5, 3, 1, 5, 4, 6, 4, 5,
1, 3, 3, 7, 8, 7, 5, 4, 3, 7, 8, 4, 6, 9, 10, 10, 9, 6, 4, 6.
b. What proportion of the measurements lies within one standard
deviation of the mean? Within two standard deviations of the mean?
Within three standard deviations?
c. Based on part (b),...
Stem
Leaf
2
6
3
0, 7
4
0, 2, 6
5
1, 5, 7, 9,...
Stem
Leaf
2
6
3
0, 7
4
0, 2, 6
5
1, 5, 7, 9, 9
6
0, 2, 5, 8
1) standard deviation:
2)Find Five-number summary of the data set
3). Draw a box plot that represents the data set