JSS 1 Mathematics Flashcards: Purpose of Statistics and Methods of Data Collection

Question 1

What is statistics?

Accepted Answer

The collection, organisation, presentation, analysis and interpretation of data.

Question 2

What is data?

Accepted Answer

Facts, measurements or observations collected for a purpose.

Question 3

Which method is most suitable for finding pupils’ favourite school meals?

Accepted Answer

questionnaire or survey

Question 4

Which method is most suitable for counting vehicles passing a gate in one hour?

Accepted Answer

direct observation and tallying

Question 5

Which source would provide official Nigerian population data?

Accepted Answer

National Population Commission

Question 6

Why should a survey sample represent the population?

Accepted Answer

So conclusions are not unfairly biased toward one group.

Question 7

A question asking “Do you agree that the excellent new library is useful?” is weak because it is ____.

Accepted Answer

leading

Question 8

What is a tally used for during data collection?

Accepted Answer

Recording each occurrence quickly and systematically.

Question 9

What does frequency mean in a data table?

Accepted Answer

The number of times a value or category occurs.

Question 10

How can school enrolment statistics help planning?

Accepted Answer

They help estimate classrooms, teachers and materials needed.

Question 11

How can past rainfall data support farming decisions?

Accepted Answer

It can reveal seasonal patterns useful for planting plans.

Question 12

What is the probability of rolling a 4 on a fair six-sided die?

Accepted Answer

$1/6$

Question 13

What is the probability of rolling an even number on a fair die?

Accepted Answer

$1/2$

Question 14

Which outcome is impossible when one ordinary die is rolled: 3, 5, 6 or 8?

Accepted Answer

8

Question 15

A die is rolled 30 times and 6 appears 7 times. What is the experimental frequency of 6?

Accepted Answer

7

Question 16

For the same experiment, what is the experimental probability of rolling 6?

Accepted Answer

$7/30$

Question 17

Why may experimental probability differ from theoretical probability in a small experiment?

Accepted Answer

Random variation affects a limited number of trials.

Question 18

Which action improves reliability when testing a die experimentally?

Accepted Answer

Roll it many times under the same conditions.

Question 19

Which is NOT an ethical data-collection practice: gaining consent, protecting privacy, recording honestly, or inventing missing responses?

Accepted Answer

inventing missing responses

Question 20

Why are statistics useful for prediction?

Accepted Answer

Patterns in past and current data can support informed estimates.

Strong work.