Give two examples each of sample, population and variable.
Give two examples each of sample, population and variable.
Example 1:- A study was conducted to know the average weight of students of class seventh in Delhi. The total number of students in class seventh was 2860. Out of these 200 students were randomly selectocf and their weight was recorded.
In this example:
(i) Population is the no of students of class seventh in Delhi, the total number of which is equal to 2860.
(ii) Sample is the 200 students selected whose weight was recorded
(iii) Variable under study is the weight of the students.
Example 2:- A person suffering from weakness and fatigue was advised by the doctor to have his blood test done for detection of anaemia. The pathologist took 2 ml of his blood for the test and tested the haemoglobin level in the blood.
In this example:
(i) Population is the total amount of blood in the person's body.
(ii) Sample is the 2 ml blood tested.
(iii) Variable under study is the haemoglobin in the blood sample.
Example 1:- A study was conducted to know the average weight of students of class seventh in Delhi. The total number of students in class seventh was 2860. Out of these 200 students were randomly selectocf and their weight was recorded.
In this example:
(i) Population is the no of students of class seventh in Delhi, the total number of which is equal to 2860.
(ii) Sample is the 200 students selected whose weight was recorded
(iii) Variable under study is the weight of the students.
Example 2:- A person suffering from weakness and fatigue was advised by the doctor to have his blood test done for detection of anaemia. The pathologist took 2 ml of his blood for the test and tested the haemoglobin level in the blood.
In this example:
(i) Population is the total amount of blood in the person's body.
(ii) Sample is the 2 ml blood tested.
(iii) Variable under study is the haemoglobin in the blood sample.
