Question

the range of 105 , 100 , 79 , 86 , 101 , 94 , 98 , 87 and 83 is :

Answer #1

Range is the difference between the lowest and the highest value from the given data.

The given set of numbers:- 105, 100, 79, 86, 101, 94, 98, 87 and 83

Firstly we should arrange the given numbers in ascending order which will make the calculation of lowest and highest value easy.

79, 83, 86, 87, 94, 98, 100, 101, 105

The lowest value = 79

The highest value = 105

Range = Highest value - Lowest value

= 105 - 79 = 26

**Therefore the range of 105 , 100 , 79 , 86 , 101 , 94 ,
98 , 87 and 83 is 26.**

n=40 samples of IQ
85, 94, 97, 86, 86, 107, 91, 99, 115, 50, 93, 98, 100, 94, 73,
76, 72, 76, 95, 89, 96, 108, 74, 72, 90, 100, 91, 98, 91, 85, 97,
91, 78, 82, 93, 89, 94, 88, 83, 76
1) Construct a histogram of the IQ data from your sample.
Describe the shape of the histogram and write a sentence or two
detailing what the histogram seems to tell you.

Below are test scores for two different classes
76 79 82 83 86 92 87 88 69 78
98 100 63 95 42 57 98 99 68 100
Which of the above two classes was better prepared for the test?
Explain.

X 28 39 32 37 44 22 40 Y 94 105 88 101 116 86 106 The
coefficient of determination for the above bivariate data is:
Question 12 options:
0.85
0.88
0.91
0.95

DHL recently selected a random sample of packages and weigh
them. The weights for the samples are given below.
Use Excel to develop a frequency distribution using classes
having equal widths.
Use Excel to develop a relative frequency and a cumulative
relative frequency distribution for the weights using the same
classes created in part b.
What percent of the sampled crates have weights greater than 96
pounds?
DHL
89
91
86
93
94
91
95
83
84
92
80
88...

#10 The following are the interval times (minutes) between
eruptions of a geyser. Detemine the five number summary and
construct a box plot from the data below.
81 83 85 86 87 90 91 93 94 94 98 98 99 101 101 103
The 5-number summary is _____

Q28)
Data 105, 91, 52, 86, 100, 96, 98, 109, 96, 95 , 57
(i). What is the error between estimated mean and the true
mean?
{please give your answer as an absolute value}
(ii). What is the error between estimated variance and the true
variance?
{please give your answer as an absolute value}

[R code]
a7 <- c(82, 74, 87, 86, 75)
b7 <- c(88, 77, 91, 88, 94, 93, 83, 94)
At a significant level of 0.05, is there a difference in the
distribution of the two groups? Use the Smirnov Test method to
test. Thank you :)

The IQ scores of 50 students are given below.
117
85
108
86
104
110
90
116
101
113
116
111
108
112
97
115
86
110
119
87
95
99
116
98
110
115
99
114
100
88
92
106
96
103
108
85
94
96
113
98
108
88
95
96
115
106
93
92
115
101
(a) Construct a grouped frequency distribution for the data. Use
85-89 for the first class and use the same width for...

Data set: 105, 82, 94.5, 72.5, 92, 91, 52, 86, 100, 96, 98, 109,
96, 96, 92
Consider these 15 scores as 15 scores of 15 students in a class
to answer the questions below:
What is the 15% trimmed mean of these 15 data points?
What is the sample of mean of these 15 data points?
What is the probability that a randomly chosen number among
these data points is between 95 & 100, exclusive of the
ends?
What...

Your data is 105, 91, 52, 86, 100, 96, 98, 109, 96, 97.5,
84.0
Is the data of scores qualitative or quantitative?
--------- Qualitative
Quantitative Neither
Is the data of scores discrete or continuous?
--------- Discrete
Continuous Neither
What is the level of measurement for this data?
--------- Nominal Ordinal
Interval Ratio
Which graph is a good choice for this data?
--------- Bar Graph Histogram
What is the rough shape of these data? Use comparison of mean
and median to...

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