Answered: presented as a grouped data with 10…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

You are required to find any case study or research data that have been collected from the first party.
The data that you gathered need to be presented as a grouped data with 10 classes.
(You may use Google Image engine in this process)
a) Based on the data above,
i. calculate all type of Measure Central Tendency (mean, median, mode, Q1 & Q3)
ii. calculate all type of Measure of Dispersion. (std. dev, variance, interquartile range)
b) Construct a histogram and frequency polygon for the above data.
(You are required to use Microsoft excel to construct the graphs)
c) Interpret the graph.

Definition Definition Measure of central tendency that is the value that occurs most frequently in a data set. A data set may have more than one mode if multiple categories repeat an equal number of times. For example, in a data set with five item—3, 5, 5, 29, 473—the mode is 5 because it occurs twice and no other value occurs more than once. On a histogram or bar chart, the element with the highest bar represents the mode. Therefore, the mode is sometimes considered the most popular option. The mode is useful for nominal or categorical data (e.g., the most common color car that users purchase), but it is problematic for continuous data because it is more likely not to have any value that is more frequent than the other.

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