A test of 100 reagents is applied to 150 students, the results are grouped in a table by class intervals with 7 intervals of amplitude 15Find the mean and mode fiIntervalsUpperlimitMCMC*fiFILowerlimit111581310413163023173913045252331389505546605312197861756820136098769083373071135911059815147015023456

We need to find the mean and mode for the given data. mean = sum(mc*fi)/sum(fi) = 8565/150 = 57.1

Answered: A test of 100 reagents is applied to…

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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A test of 100 reagents is applied to 150 students, the results are grouped in a table by class intervals with 7 intervals of amplitude 15
Find the mean and mode

fi
Intervals
Upper
limit
MC
MC*fi
FI
Lower
limit
1
1
15
8
13
104
13
16
30
23
17
391
30
45
25
23
31
38
950
55
46
60
53
1219
78
61
75
68
20
1360
98
76
90
83
37
3071
135
91
105
98
15
1470
150
23456

Definition Definition Measure of central tendency that is the value that occurs most frequently in a data set. A data set may have more than one mode if multiple categories repeat an equal number of times. For example, in a data set with five item—3, 5, 5, 29, 473—the mode is 5 because it occurs twice and no other value occurs more than once. On a histogram or bar chart, the element with the highest bar represents the mode. Therefore, the mode is sometimes considered the most popular option. The mode is useful for nominal or categorical data (e.g., the most common color car that users purchase), but it is problematic for continuous data because it is more likely not to have any value that is more frequent than the other.

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