Answered: Your friend Bob thought he did well on…

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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Your friend Bob thought he did well on his biology test- he scored a 70. He said, he knew he did better than average as the profesor said the average was 60. He also heard his profesor say it was a normal distribution with a standard deviation of 5, but Bob has no clue what this means. Using what you know about the normal distribution, explain how Bob's score of 70 compares to Dave's score of 55.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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