Answered: . Maria is a candidate for honors. Her…

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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1. Maria is a candidate for honors. Her final grades in Physics, Statistics, Psychology, Economics and Humanities are 90,92, 91, 95 and 97. If the respective units for these subjects are 3, 2.5, 5, 2.5 and 3, compute her average grade.

A. 91.85. B. 92.72. C. 93.00. D. 94.36. E. None of the choices

2.As a way to standardize concepts in the National Health and Demographic Survey, a person who finishes Grade III is taken to have spent 3 years in school. Any person who is an elementary school graduate is set to have spent 10 years in school and so on. The following are data of the number of years spent in school by a sample of 15 – 49 year old women: 7 6 6 12 4 10 10 14 6 5 10 6 . Which of the following statements is not true?

A. The mean is 8. B. The median is 10. C. The mode is 6. D. The data set is unimodal. E. None of the choices

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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