Question

For the following Simple data ( separately ) :

18 , 30 , 14 , 21 , 25 , 24 , 34 , 15 , 25 , 26 , 18 , 24 , 18 , 33
, 20

1) Find ( Mean , Mode , Median , Range , Midrange , Standard
Deviation , Variance )

2) Sketch the distribution Shapes approximately.

3) Determine the type of shape

4) Find coefficient of variation

5) Find the value of the 20th and 57th

percentile .

6) Find the percentile rank of a score of 23

7) Compute the z-score of 34

8) Calculate the Quartiles : Q1 , Q2 , Q3 .

9) Calculate the Interquartile Range ( IQR)

10) Check if the values – 5 and 41 are outlier or not

11) Construct the steam and leaf plot

12) Construct the box plot

Answer #1

i am allowed to do four questions, though i ll try to solve as much as possible.

coefficient of variation has been calculated using earlier calculated values of mean and standard deviation.

For the following Simple data ( separately ) :
18 , 30 , 14 , 21 , 25 , 24 , 34 , 15 , 25 , 26 , 18 , 24 , 18 , 33
, 20
1) Find ( Mean , Mode , Median , Range , Midrange , Standard
Deviation , Variance )

For the following Ungrouped Frequency Distribution
below :
x 14 18 20 21 24 25 28 30
f 4 8 3 8 2 5 7 4
1) Find ( Mean , Mode , Median , Range , Midrange , Standard
Deviation , Variance )
2) Find coefficient of variation
3) Compute the z-score of 28

Use the accompanying data set to complete the following
actions.
a. Find the quartiles.
b. Find the interquartile range.
c. Identify any outliers.
40 51 35 44 40 37 40 48 45 37 36 56 43 36 15 52 37 51 30 30
a. Find the quartiles.
The first quartile, Q1 is =
The second quartile, Q2 =
The third quartile, Q3 =
(Type integers or decimals.)
b. Find the interquartile range.
The interquartile range (IQR) is =
(Type...

Using the given data set to answer the following questions80 60
100 40 40 50 80 90 100 60 10 80 45 60 30 80 30 90 100 60 50 75
a. find Mean, Median, Mode, Standard Deviation, and
Variance:
b. find First quartile and Third Quartile
c. Find the number which represents the 33th percentile.
d. find the percentile of 45
e. find the range and midrange
f. construct a box-plot
g. Construct a frequency distribution with 5 classes....

Use the accompanying data set to complete the following actions.
a. Find the quartiles. b. Find the interquartile range. c. Identify
any outliers. 41 53 35 45 40 38 40 47 45 39 36 54 44 34 15 52 39 49
30 29 a. Find the quartiles. The first quartile, Upper Q 1, is
nothing. The second quartile, Upper Q 2, is nothing. The third
quartile, Upper Q 3, is nothing. (Type integers or decimals.) b.
Find the interquartile range....

Data Set : 41, 18, 21, 34, 90, 39, 41,
14, 45, 53, 50, 82, 38, and 92
Compute the percentile of 38
Find the 90th percentile
Find the five number Summary
Construct a modified Box-Plot
Determine if data has any potential outliers and explain
why?

The accompanying data represent the miles per gallon of a random
sample of cars with a three-cylinder, 1.0 liter engine.
(a)
Compute the z-score corresponding to the individual who
obtained
35.9 miles per gallon. Interpret this result
(b)
Determine the quartiles.
(c)
Compute and interpret the interquartile range, IQR.
(d)
Determine the lower and upper fences. Are there any
outliers?
32.6
34.4
34.8
35.2
35.9
36.2
37.4
37.7
38.0
38.1
38.2
38.6
38.7
39.0
39.4
39.7
40.2
40.7
41.4
41.8...

Home work#4 cont.
Sum#5
The following data give the speeds of 13 cars (in mph) measured by
radar, traveling on i-84
73, 75,69,68,78,70,74
76,72,79,68,77,72
Calculate the value of the 35th percentile.
Enter the exact answer in mph.
Sum#6
The following data give the annual salaries (in thousand dollars)
of 20 randomly selected health care workers.
50,71,57,39,45,64,38,51,33,62
75,40,69,44,77,61,58,54,64,59
A. Calculate the values of the three quartiles and the
interquartile range
Q1
Q2
Q3
IQR
B. Find the approximate value of the...

Complete the following problems:
Hours
37
29
14
42
34
7
24
21
34
44
29
34
26
33
17
21
28
15
33
38
Grade
82
80
42
96
87
30
76
71
92
97
98
57
87
97
48
60
68
70
79
99
An experiment was done to determine if the amount of study hours
affect the grade earned by all students in a Business class. Using
the above data from the population, find the
following:
Median,...

Use the data set {13, 16, 17, 18, 19, 19, 20, 25, 27, 30, 35,
42} The data represent the ages of a random sample of people in
line ride a roller coaster. Find the interquartile range (IQR).
Select one:
a. 11
b. 19
c. 23.4
d. 29

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