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Unvariate Analysis Sample Assignment

Question: Calculate Quartile1 and Quartile3 for the following distribution:
_____________________________________
Marks             No. of            Marks            No. of           
obtained        Student        Otained       Students
5 – 9             ___5_           25 - 29__         5
10 – 14         __ 6_           30 - 34__         4
15 – 19         __15            35 - 39__         2
20 – 24         __10            40 - 44__         2

Solution:
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Marks Obtained        No. of students        C.f.__
5 – 9                     _______5______            5
10 – 19                 _______6_____            11
15 – 19                _______15____             26
20 – 24                 ______ 10____             36
25 – 29                 _______5____              41
30 – 34                 _______4____              45
35 – 39                 _______2____              47
40 – 44                        ____2__                  49
                  _________∑f = 49

N/4 = 49/4 = 12.25 therefore Q1 lies in the interval 15 – 19.
.: Q1 = 14.5 + 49/4 – 11 x 5 = 14.92
              _______15
3N = 3X49 = 147 = 36.25, therefore Q3 lies in the interval 25 – 29
  4    __4    ___4

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Other Sample Assignments in Statistics Homework Assignment :

Continious Distribution	Descrete Distributions
Descriptive Statistics	Nonparamatric Statistics
Probability	Sampling And Sampling Distribution
Statistical Inference Estimation For Single Popula	Simple Regression Analysis
Statistical Inference About 2 Population	Time Series Forcasting Index Number
Statistical Quality Control	Correlation
Index Number	Larger Sample Mean Proportions
Non Parametric Test	Probability Theory
Sampling Distribution	Simple and Multiple Linear Regression Analysis
Unvariate Analysis

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