Homework Help is Here – Start Your Trial Now!
Math
Statistics
We are interested in the number of years students in a particular elementary statistics class have lived in Maryland. The information in the following table is from the entire class. Number of Number of Frequency Frequency years years 7 1 22 1 14 23 1 15 1 26 1 18 40 2 19 4 42 2 20 3 Total = 20 Calculate the variance and report to 2 decimal places. 1.

We are interested in the number of years students in a particular elementary statistics class have lived in Maryland. The information in the following table is from the entire class. Number of Number of Frequency Frequency years years 7 1 22 1 14 23 1 15 1 26 1 18 40 2 19 4 42 2 20 3 Total = 20 Calculate the variance and report to 2 decimal places. 1.

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
See similar textbooks
icon
Related questions
Question
We are interested in the number of years students in a particular elementary statistics class have lived in Maryland. The information in the following table is from the entire class. Number of Number of Frequency Frequency years years 7 1 22 1 14 23 1 15 1 26 1 18 1 40 2 19 4 42 2 20 3 Total = 20 Calculate the variance and report to 2 decimal places.
Transcribed Image Text:We are interested in the number of years students in a particular elementary statistics class have lived in Maryland. The information in the following table is from the entire class. Number of Number of Frequency Frequency years years 7 1 22 1 14 23 1 15 1 26 1 18 1 40 2 19 4 42 2 20 3 Total = 20 Calculate the variance and report to 2 decimal places.
Expert Solution
Introduction

Dispersion is used to measure the deviation of observation from the central measures. Variation is the measure of dispersion, which used to measure the spread of the data set. It is calculated by taking the squared deviation from the mean. For the discrete frequency distribution, the variance is defined as :

σ2=∑fi×xi2∑f-∑fi×xi∑f2

 

trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS