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Assignment No: 1 (Lessons 1-9)
Question 1: Marks: 4+3=7
Class Limits |
Frequency |
118 – 126 |
3 |
127 – 135 |
5 |
136 – 144 |
9 |
145 – 153 |
12 |
154 – 162 |
5 |
Construct the columns of Class Boundaries, Relative Frequency, Mid points and
Cumulative frequency.
follows:
66, 73, 68, 54, 25, 38, 67, 69, 74, 53, 52, 72, 55, 75, 37, 24, 13, 12, 11, 26, 39, 23
Construct a Stem and Leaf display for the above data.
Question 2: Marks: 6+2=8
52, 63, 73, 58, 88, 72, 60, 76, 69, 74
Calculate Arithmetic mean, Geometric mean and Harmonic mean for the above data.
b. Which scale of measurement is more suitable in the following examples?
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STA301 Assignment 1 Solution - Spring 2013
See the attached file please
i could not understand the relative frequency and stem and leaf and the 2nd questions b part can you please explain??
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Stem Leaf
1 1, 2, 3
2 3, 4, 5, 6
3 7, 8, 9
5 2, 3, 4, 5
6 6, 7, 8, 9
7 2, 3, 4, 5
Q1:(a)
CLASS BOUNDARIES:
MID-POINTS: (calculated by averaging the class limits)
RELATIVE FREQUENCY:
CUMULATIVE FREQUENCY:
(b):
Stem Leaf
1 1, 2, 3
2 3, 4, 5, 6
3 7, 8, 9
5 2, 3, 4, 5
6 6, 7, 8, 9
7 2, 3, 4, 5
Q2:(a)
arithmetic mean: 68.5
geometric mean: 67.7
harmonic mean: 67.7
(b):
Are these the correct answers...? please correct me, if i'm wrong...
Thanks...
Yes all the answers are same as mine its correct
Relative frequency can be calculated by dividing frequency of each class by the total frequency...
In this question:
3/34= 0.088 |
5/34= 0.147 |
9/34= 0.264 |
12/34= 0.353 |
5/34= 0.147 |
Thanks...
thanks samra tariq for your guide and help
thanks
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