2.1. For the following data
values:
68
56
78
80
65
45
65
64
66
Find the following
2.1.1 Mean [2]
2.1.2 Variance [3]
2.1.3 Standard deviation [1]
2.1.4 Coefficient of variation
[3]
2.1.5 The interquartile
range
Given the following data set 11 20 33 45 52 30 27 21 38 42 28 25
79 60 14 35 100 23 88 58
A. Find the quartiles
B. Determine if there are any outliers
C. Draw a box plot (exclude outliers but plot them as well).
The following refer to the following data set:
63
45
69
32
71
34
32
25
29
80
38
What is the mean (¯xx¯) of this data set?
mean = (Please show your answer to one decimal
place.)
What is the median of this data set?
median =
What is the mode of this data set?
mode =
Data Set: 14, 16, 21, 34, 38, 39, 41, 45, 50, 53, 82,
90
-
Find the 70th percentile
-Find the five number summary
-Determine if the data has any outliers. Explain why
Consider the following set of data.
(17, 8), (27, 55), (64, 31), (83, 22), (115, 58), (119, 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...
Find x and
y so that the ordered data set has a mean
of 42 and a median of 35, hence compute the harmonic mean and
geometric mean of the data sample.
17, 22, 26, 29, 34,
x, 42, 67, 70,
y
The lengths, in centimeters, of 18 snakes are given below. Draw
an ordered stem-and-leaf diagram for the
data.
24, 62, 20, 65, 27, 67, 69, 32, 40,
53, 55, 47, 33,...
Let
X,Y and Z be the following matrices
X=[1 10 42 6;5 8 78 23;56 45 9 13;23 22 8 9]
Y=[1 2 3;4 10 12;7 21 27]
Z=[10 22 5 13]
1. Using single index notation, find the index numbers of the
elements in each matrix that contain values of greater than
10.
Use MATLAB format
data set
yes 27 no 4
find the 95% and 99% confidence intervals for u
find the 95% and 99% confidence intervals for o
find the 95% and 99% confidense intervals for p
Consider the data set: 26, 29, 24, 17, 27, 20, 23, 21, 26,
27.
(a) Find the median and the upper and lower quartiles for this
data set.
(b) Setup then evaluate the numerical expression for the mean of
this data set. You must write it out completely. (
c) Setup and then evaluate the numerical expression for the
variance of this data set. You must write it out completely.
(d) Find the standard deviation of this data set.
Given the data set below
25 52 67 23 78 89 57 90 32 77
45 48 62 54 94 69 46 79 40 33
21 57 84 54 23 34 68 63 61 76
87 78 39 50 70 60 32 65 73 45
28 82 66 79 71 80 46 66 24 90
A)What is the probability of an impossible even?
B) What is the probability of a certain event?
C) find the approximate mean using the Frequency...