20 A The data below is a distribution of the marks (with a maximum of 45) obtained by students in a test. Investigate whether the data is negatively or positively skewed. Marks 31-35 36-40 41-45 46-50 51-55 56-60 61-65 Frequency 15 22 20 11 8 13 10 B The distribution below shows the heights of students of diverse age groups. Determine the extent of the relationship between the ages of students and their heights using the Spearman's rank correlation coefficient. Age (x) 23 24 25 26 27 28 Height (y) 23 19 15 11 7 25

20 A The data below is a distribution of the marks (with a maximum of 45) obtained by students in a test. Investigate whether the data is negatively or positively skewed. Marks 31-35 36-40 41-45 46-50 51-55 56-60 61-65 Frequency 15 22 20 11 8 13 10 B The distribution below shows the heights of students of diverse age groups. Determine the extent of the relationship between the ages of students and their heights using the Spearman's rank correlation coefficient. Age (x) 23 24 25 26 27 28 Height (y) 23 19 15 11 7 25

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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The data represent the time, in minutes, spent reading a political blog in a day. Construct a frequency distribution using 5 classes. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least frequency? 14 5 11 2 3 19 6 15 15 18 1 18 11 4 13 0 14 6 12 16 Complete the table, starting with the lowest class limit. (Simplify your answers.) Class Frequency Midpoint Relative Frequency Cumulative Frequency nothing-nothing nothing nothing nothing nothing nothing-nothing nothing nothing nothing nothing nothing-nothing nothing nothing nothing nothing nothing-nothing nothing nothing nothing nothing nothing-nothing nothing nothing nothing nothing Which class has…
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