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4. What are the standard deviation and variance of the variable "age"? 5. Construct a relative frequency / cumulative relative frequency table (with no grouping). 6. Construct a relative frequency histogram of the data set (with no grouping).

4. What are the standard deviation and variance of the variable "age"? 5. Construct a relative frequency / cumulative relative frequency table (with no grouping). 6. Construct a relative frequency histogram of the data set (with no grouping).

MATLAB: An Introduction with Applications
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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I need help with 4,5,6 please.. 

The ages (in years) for a simple random sample of students from a large college are as follows: 20, 18, 20, 18, 19, 18, 21, 19 1. What proportion of the students in the sample are 19 years old or younger [ i.e. Pr(Y ≤ 19)] ? 2. Of the students in the sample who are 19 years old or older, what proportion are 20 years old or younger [i.e. Pr(Y≤ 20 | Y³ 19)] ? 3. What are the mean and median age (in years) for the students in the sample? 4. What are the standard deviation and variance of the variable "age"? 5. Construct a relative frequency / cumulative relative frequency table (with no grouping). 6. Construct a relative frequency histogram of the data set (with no grouping).
Transcribed Image Text:The ages (in years) for a simple random sample of students from a large college are as follows: 20, 18, 20, 18, 19, 18, 21, 19 1. What proportion of the students in the sample are 19 years old or younger [ i.e. Pr(Y ≤ 19)] ? 2. Of the students in the sample who are 19 years old or older, what proportion are 20 years old or younger [i.e. Pr(Y≤ 20 | Y³ 19)] ? 3. What are the mean and median age (in years) for the students in the sample? 4. What are the standard deviation and variance of the variable "age"? 5. Construct a relative frequency / cumulative relative frequency table (with no grouping). 6. Construct a relative frequency histogram of the data set (with no grouping).
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