Question

Consider the following data set.

37

20

73

31

8

57

51

47

a) Determine the 20th percentile.

b) Determine the 40th percentile.

c) Determine the 70th percentile.

(Type an integer or a decimal. Do not round.)

Answer #1

Hence the solution..

Calculate the 20th, 40th, and 70th percentiles for the following
data set: (Use the methodology shown in
Section 3.2 of the text to calculate the percentiles. Negative
values should be indicated by a minus sign. Do not round
intermediate calculations. Round your final answers to 1 decimal
place.)
-259
-240
-326
-307
-306
-323
-324
20th percentile:
40th percentile:
70th percentile:

For the data set 61, 32, 50, 73, 51, 42, 55, 65, 59, 57 find the
standard deviation accurate to one decimal place. Make sure you
work this problem by hand with the formula I introduced in class.
Do not cheat yourself out of learning!
Sample Mean =
Sum of squared deviations =
Denominator =
Standard Deviation =

Following are the ages of 23 Academy Awarad winner
Actors.
41 31 57 62 37 71 58 73 69 52 74 64
72 30 33 47 26 36 42 27 29 67 55
Create the Stem and leaf and find the following parts:
Find the value reprtesenting 20th percentile?
Find the value reprtesenting 65th percentile?
Blank 1:
Blank 2:
Blank 3:
Blank 4:
Blank 5:
Blank 6:
Blank 7:
Blank 8:
Blank 9:
Blank 10:
Blank...

Consider the following data set.
39
38
16
19
30
6
10
20
26
a) Determine the 15th percentile.
b) Determine the 45th percentile.
c) Determine the 85th percentile.

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...

The following is a set of data for a population with N=10.
8, 9, 11, 5, 22, 10, 9, 7, 9, 6
a. Compute the population mean.
b. Compute the population standard
deviation.
a. The population mean is μ =
(Type an integer or a decimal. Do not round.)
b. The population standard deviation is σ=
(Round to two decimal places as needed.)

Consider the data set: 2, 10, 3, 7, 11, 13, 8, 4, 2, 15, 37, 88,
111, 23, 21, 22, 16, 43, 1, 3, 6, 19, 8, 14, 20, 233, 1, 25, 17 (a)
By glancing at this data set, would you expect the sample mean to
be greater than the median, or smaller than the median? greater
than the median Correct: Your answer is correct. (b) By how much do
the sample mean and sample median differ? (To answer...

Consider the following population data values.
14
41
0
20
30
10
16
a) Calculate the range.
b) Calculate the variance.
c) Calculate the standard deviation.
a) The range is
4141.
(Type an integer or a decimal.)b) The
population variance is
nothing.
(Type an integer or decimal rounded to two decimal places as
needed.)
c) The population standard deviation is
nothing.
(Type an integer or decimal rounded to two decimal places as
needed.)

Consider the following data set.
14
27
13
14
15
14
11
13
21
11
25
26
29
a)
Determine the quartiles for this data.
b)
Determine the interquartile range for this data.
a)
The first quartile is
nothing,
the second quartile is
nothing,
and the third quartile is
nothing.
(Type integers or decimals.)
b)
The interquartile range is
nothing.
(Type an integer or a decimal.)

Consider the following set of data.
(24, 11), (33, 45), (57, 26), (79, 18), (107, 58), (116,
6)
(a) Calculate the covariance of the set of data. (Give your answer
correct to two decimal places.)
(b) Calculate the standard deviation of the six x-values
and the standard deviation of the six y-values. (Give your
answers correct to three decimal places.)
sx
=
sy
=
(c) Calculate r, the coefficient of linear correlation,
for the data in part (a). (Give your...

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