Question

Find the (a) mean, (b) median, (c) mode, and (d) midrange for the given sample data. Fourteen different second-year medical students measured the blood pressure of the same person. The systolic readings (in mmHg) are listed below.

131 140 145 143 131 136 131 147 120 140 120 131 137 124

Answer #1

Solution:-

a.Mean= Sum of observations/ total number of observations

Sum(S)=131 +140 +145+ 143+ 131+ 136 +131+ 147+ 120 +140 +120+ 131 +137 +124=1876

Number of observations(N)=14

Therefore, Mean (M)= S/N=1876/14=134

b.Median (Middle value)

As there are even number of terms , hence the median is basically the mean of the two middle number's

i.e = (131+147) / 2 = 139

c.Mode (most occurucying term)

To find the mode , i.e the term occuring max number of time's we will first find the frequency of occurance of each term in the given series.

131: 4

140 : 2

145: 1

143: 1

136 :1

147:1

120 :2

137 :1

124:1

Hence clearly our mode is 131.

(d) midrange for the given sample data

131 140 145 143 131 136 131 147 120 140 120 131 137 124

Least number:- 124

Maximum number:- 147

Mid range = (least + max) / 2

(124+147)/2= 135.5

Fourteen different second-year medical students at a hospital
measured the blood pressure of the same person. The systolic
readings (mm Hg) are listed below. Use the given data to construct
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125 133 130 125 149 120 140 147 150

Six different second-year medical students at Bellevue Hospital
measured the blood pressure of the same person. The systolic
readings (in mmHg) are listed below. Find the range, variance,
and standard deviation for the given sample data. If the subject's
blood pressure remains constant and the medical students correctly
apply the same measurement technique, what should be the value of
the standard deviation?
146 137 120 138 138 137

Six different second-year medical students at Bellevue Hospital
measured the blood pressure of the same person. The systolic
readings (in mmHg) are listed below. Find the range, variance,
and standard deviation for the given sample data. If the subject's
blood pressure remains constant and the medical students correctly
apply the same measurement technique, what should be the value of
the standard deviation?
146 137 120 138 138
137146 137 120 138 138 137

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and then (e) answer the given question Listed below are the jersey
numbers of 11 players randomly selected from the roster of a
championship sports tearn do the results tell us? 9, 25, 14, 72,
17, 73, 19, 62, 15, 76, 75

The following data represent the lifetimes (in hours) of a
sample of 40 transistors: 112, 121, 126, 108, 141, 90, 136, 134,
121, 118, 108, 143, 108, 122, 127, 140, 113, 117, 126, 130, 134,
120, 131, 133, 118, 125, 151, 147, 137, 140, 132, 119, 110, 124,
132, 162, 135, 130, 136, 128
a) Give a cumulative relative frequency plot of these data.
b) Treating the cumulative relative frequency plot as the
Cumulative Probability Distribution of an unknown continuous...

The following sample data were obtained from different
second-year medical students who took blood pressure measurements
of the same person. Conduct a formal hypothesis test to test for a
linear correlation between the systolic and diastolic readings. Use
a 0.05 significance level.
Systolic
138
130
135
140
120
Diastolic
82
91
100
100
80
What is the value of r? Round to 3 decimal places.

Please type the answer！
Please type the answer！
Please type the answer！
Please type the answer！
Please type the answer！
The results of the blood pressure measurements taken of the same
patient by fourteen different second-year medical students are
listed in the table below.
Systolic Diastolic
138
82
130
91
135
100
140
100
120
80
125
90
120
80
130
80
130
80
144
98
143
105
140 ...

#2. Find the mean, median, and mode for the following sample of
scores:
3, 6, 7, 3, 9, 8, 3, 7, 5
Mean=
Median=
Mode=
#4. Find the mean, median, and mode for the scores in the
following frequency distribution table:
X
F
8
1
7
1
6
2
5
5
4
2
3
2
Mean=
Median=
Mode=
#6. A population of N = 15 scores has SX= 120. What is the
population mean?
#10 One sample has a...

Find the explained variation, unexplained variation, total
variation, coefficient of determination, and standard error of
estimate.
Round to a minimum of 4 decimal places, if necessary. Eight
different second-year medical students took blood pressure
measurements of the same patient and the results are listed
below.
Systolic 120 145 149 142 138 121 141 148
Diastolic 80 93 82 76 75 81 94 99
Explained variation-
Unexplained variation-
Total variation-
r2-
se-

Find the explained variation, unexplained variation, total
variation, coefficient of determination, and standard error of
estimate. Round to a minimum of 4 decimal places, if
necessary.
Eight different second-year medical students took blood pressure
measurements of the same patient and the results are listed
below.
Systolic
127
129
122
150
140
121
148
140
Diastolic
85
76
93
95
99
96
88
79
Explained variation
Unexplained variation
Total variation
r2
se

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