Question

Find the standard deviation, the range, and the outliers

56, 68, 70, 74,74, 80, 82, 88, 90,102

statistics

Answer #1

Find the range, mean, variance, and standard deviation of the
population data set.
68 76 96 77 85 80 87 99 80 112 100 89 101 81 98 82 91 111 97 89
84 92 114 103 92

Find the range, the standard deviation, and the variance for the
given samples. Round non-integer results to the nearest
tenth.
52, 77, 65, 82, 62, 68, 88, 60, 86
range
standard deviation
variance

1) a) Find the mean, median, and standard deviation of the data
set.
b) Create an appropriate graphical display (s) and describe the
shape of the distribution. You do not have to attach the
displays.
2) Test whether the mean pulse rate of general public is greater
than 70 at 5% significance level;
Write the following:
a) Null and alternative hypotheses
b) Value of the test statistic
c) p-value
d) Conclusion. Do you have evidence to believe the mean pulse...

(a) find the quartiles
(b) find the interquartile range
(c) identify any outliers
56 63 51 60 57 60 60 54 63 59 80 63 60 62 65 36 41 39 47 15 48
34 28 25 28 19 18 50 27 53 42 53 36 28 26 41 37 40 48 45

Given the data set 62 , 65 , 68 , 70 , 72 , 74 , 76 , 78 , 80 ,
82 , 96 , 101, find a) the median, b) the first quartile, c) the
third quartile, c) the interquartile range (IQR).

Pulse
Frequancy
Minimum
Maximum
Class width
PULSE
60
74
86
54
90
80
66
68
68
56
80
62
74
60
52
60
66
64
64
46
68
58
68
70
56
66
78
68
62
70
72
74
64
50
70
58
60
88
84
76
46
68
58
68
70
56
66
78
68
62
constructing a frequency table
1 decide on the number of classes(should be between 5 and 20
2 calculate round up (highest value)-(lowest value)/number...

A test has a mean score of 82 and a standard deviation of 6. The
distribution of scores is bell-shaped. According to the Empirical
Rule, approximately 95% of the scores are between what two
values?
Group of answer choices
70 and 94
73 and 91
76 and 88
64 and 100

Data: 59, 74, 73, 66, 80, 84, 90, 110, 37.2, 50, 101.8, 39, 80,
35, 88, 34, 82, 65, 61, 63, 66, 88, 70, 79, 75
b) Given the data above, calculate the 90% Confidence Interval.
(Again, show your work.)
Which is a bigger range, the 95% or 90% confidence interval?
Why?

Given the following data set of test #1 scores.
78 80 68 56 76 78 74 90 96 60 98 66 100 76 64 82 62 72 78 74 90
90 68 72 82 72 78 54 62 72 72 78 65 51 34 82
a. Construct a stem and leaf plot.
b. Construct a frequency distribution with that has class width
of 12, and the lower class limit of the first class is 34.
c. Construct a frequency polygon...

A variable is normally distributed with mean 68 and standard
deviation 10. Find the percentage of all possible values of the
variable that:
a. Lie between 73 and 80
b. Are atleast 75
c. Are at most 90

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