Question

a. In a fishing competition held recently, the weight of fish caught by each participant is weighted. State the type of data acquired through this experiment.

b. A survey was carried out on 20 boys and 25 girls in a college to find out whether they like the subject Statistics or not. State   

(i) the population

(ii) the sample

(iii) the variable

(iv) the type of variable (qualitative or quantitative)      

Answer 1

A population includes all of the elements from a set of data.

A sample consists one or more observations drawn from the population

A variable is any characteristics, number, or quantity that can be measured or counted. A variable may also be called a data item.

Quantitative data are measures of values or counts and are expressed as numbers.

Qualitative data are measures of 'types' and may be represented by a name, symbol, or a number code.

Question A answer:

Population: Weight of fish's.

Sample: weight of fish's caught by participants.

Variable: weight

Type of variable: Quantitative variable (weight is quantitative)

Question B answer:

Population: All the students in the college.

Sample: 20 boys and 25 girls

Variable: Whether they like the subject Statistic.

Type of variable: Qualitative variable.