Saturday, 27 April 2013
Assignment No: 1 (Lessons 1-9)
Question 1: Marks: 4+3=7
Given the following frequency distribution:
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.
The ages of 22 patients admitted to a certain hospital during a particular week were as
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
Ten students (graduates and undergraduates) are enrolled in the course on statistics. Their weights are given below:
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?
Religion can be categorized as Jewish, Muslim, Christian, Buddhist and “Other”.
A teacher ranks the students according to their oral language skills.
The number of minutes of overtime work that employees perform.
The number of questions asked by a customer during a simulated encounter with a salesperson.
Question 1: Marks: 4+3=7
Given the following frequency distribution:
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.
The ages of 22 patients admitted to a certain hospital during a particular week were as
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
Ten students (graduates and undergraduates) are enrolled in the course on statistics. Their weights are given below:
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?
Religion can be categorized as Jewish, Muslim, Christian, Buddhist and “Other”.
A teacher ranks the students according to their oral language skills.
The number of minutes of overtime work that employees perform.
The number of questions asked by a customer during a simulated encounter with a salesperson.
