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. A survey was conducted to 100 students to determine how much time they spend for studying before taking a major examination. The observations are between 90 and 270 minutes. How many classes will you recommend? What is the class interval?

. A survey was conducted to 100 students to determine how much time they spend for studying before taking a major examination. The observations are between 90 and 270 minutes. How many classes will you recommend? What is the class interval?

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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4. A survey was conducted to 100 students to determine how much time they spend for studying before taking a major examination. The observations are between 90 and 270 minutes. How many classes will you recommend? What is the class interval?
5. A sari-sari storeowner monitors his daily sales for a period of 30 days. The following are his daily sales:

560     960     260     900     700     1020

370     940     340     400     795     240

200     390     100     500     890     900

250     450     1010    650     800     450

250     450     890     695     749     360

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