Question

Please find the range, sample standard deviation and
inter-quartile range (IQR) of the following data set.

31 | 37 | 39 | 42 | 46 | 48 | 55 | 61 | 76 | 76 |

range = (Please enter an exact answer.)

standard deviation (ss) = (Please show your answer to one decimal place.)

IQR = (Please enter an exact answer.)

A new number, 153, is added to the data set above. Please find the
new range, sample standard deviation and IQR of the new data
set.

range = (Please enter an exact answer.)

standard deviation = (Please show your answer to one decimal place.)

IQR = (Please enter an exact answer.)

Which measure of spread is less affected by the addition of the
extreme observation?

___ IQR

___ Range

___ standard deviation

Answer #1

Q1 )Find the 1st quartile, 2nd quartile, third quartile and the
interquartile range of the following data set
72, 74, 75, 77, 79, 82, 83, 87, 88, 90, 91, 91, 91, 92, 96, 97,
97, 98, 100
The 1st Quartile :
The 2nd Quartile :
The 3rd Quartile :
The IQR :
Q2)
According to the empirical rule, if a population has a normal
distribution, approximately what percentage of values is within
one, two and three standard deviation of the...

Consider the data set.
2,3,4,6,9
(a)
Find the range. (Enter an exact number.)
(b)
Use the defining formula to compute the sample standard
deviation s. (Enter a number. Round your answer to two
decimal places.)

Find the mean, median, mode, range, and standard deviation for
this data set. When
applicable state whether the data set is: unimodal, bimodal,
or multimodal. Round your
answers to one or more decimal place than the largest number
of decimal places given in
the data. The data set is a sample.
$11.40, $32.00, $22.50, $12.01, $10.08, $18.30, $18.40,
$32.00

Consider the data set.
2, 4, 6, 7, 8
(a) Find the range. (Enter an exact number.)
(b) Use the defining formula to compute the sample standard
deviation s. (Enter a number. Round your answer to two
decimal places.)
(c) Use the defining formula to compute the
population standard deviation σ. (Enter a number. Round
your answer to two decimal places.)

Use the accompanying data set to complete the following actions.
a. Find the quartiles. b. Find the interquartile range. c. Identify
any outliers. 54 61 55 61 65 56 57 62 56 63 60 63 55 57 78 a. Find
the quartiles. The first? quartile, Upper Q 1?, is ? The second?
quartile, Upper Q 2?, is? The third? quartile, Upper Q 3?, is ?
?(Type integers or? decimals.) b. Find the interquartile range. The
interquartile range? (IQR) is?

Using the same data set as in 1, find the variance, standard
deviation, and range, using the formulas. Using the same data set
as in 1, find the variance, standard deviation, and range, using
the formulas. Show the formulas and intermediate steps. Round your
answers to the correct number of decimal places
data set 9, 2, 8, 2, -9, 5, 6, 2, -5, -9, 9, 4, 5, 5, -3, -1,
0

Find the range, mean, and standard deviation of the
following data set.
5,6,7,8,9,10,11,12,13,14

Please explain step by step.
The following data represents the GPA of a sample of 15 students
enrolled in a history class.
3.4, 3.9, 4.0, 2.8, 3.5, 2.6, 3.2, 3.6, 1.9, 2.1, 2.0, 3.3, 2.4,
1.8, 3.2
(a) Find the first quartile. Do not include the median in the
calculations.
Answer: __________________
(b) Find the third quartile. Do not include the median in the
calculations.
Answer: __________________
(c) Find the mean.(Round to 2 decimal places.)
Answer: __________________
(d) Find the...

Calculate the range, population variance, and population
standard deviation for the following data set. If necessary, round
to one more decimal place than the largest number of decimal places
given in the data. 2,3,4,5,6,7,8,9,10,11

Calculate the range, population variance, and population
standard deviation for the following data set. If necessary, round
to one more decimal place than the largest number of decimal places
given in the data.
5,6,7,8,9,10,11,12,13,14

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