MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Concept explainers

Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of tw…
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency o…
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow compar…
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Question

Consider the following data on marks obtained in Quizzes 1 and 2 by a sample of 10 students
enrolled in a statistics class
Quiz 1                Quiz 2
12                      13
10                      7
12                     12
15                  15
12                         12
15                           20
10                           14
11                            15
14                               13
14                                      11

For the marks in each quiz calculate:
i. Mean
ii. Median
iii. Mode

Range
v. Variance
vi. Standard Deviation
vii. Coefficient of Variation
viii. Lower Quartile
ix. Upper Quartile
Interquartile Range
xi. 60th Percentile
xii. 3rd Decile
xiii. 4th Quintile

Also calculate
xiv. Covariance
xv. Correlation Coefficient

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