Unit 6 Test - Collecting Data - Grade 7A Bilingual (Set B)
20 marks from 20 questions
Question 1
Alana is going to visit the cinema with 10 of her friends.
She wants to collect data to decide which film they should see.
How should she collect her data?
a. Ask all of her friends
b. Ask one of her friends
c. Ask half of her friends
Question 2
Marek records data about how much time learners in his school spend on homework.
What type of data does he collect?
a. Categorical
b. Discrete
c. Continuous
Question 3
Marek wants to find out how much time learners in his school spend on their homework.
How could he take a sample?
a. Ask all learners in his class
b. Ask two learners in each class
c. Ask all the learners in his school
Question 4
Nasima collects data to find out about the benefits of living near the centre of her town.
How many people should Nasima ask?
a. One person who lives near her
b. Her family and friends
c. Twenty people who live in the town
d. Everyone who lives in her town
Question 5
Which of these methods can be used to carry out a survey?
Select all correct answers.
a. Interview people
b. Record your observations
c. Create a questionnaire
d. Conduct an experiment
Question 6
What would you do if you need to make an event happen so you can record your observations?
a. Conduct a survey
b. Conduct an experiment
c. Carry out an interview
d. Create a questionnaire
Question 7
There are 12 000 houses in a town. A survey is to be conducted.
Should every house be asked, or should a sample be taken?
a. Take a sample.
b. Ask every house.
Question 8
There are 12 bags of apples in a box. You want to record the number of apples in each bag. Should
you take a sample of the bags or count all the bags?
a. Take a sample.
b. Count all the bags.
Question 9
Which method should be used to record the number of times a 4 is rolled on a normal dice?
a. Conduct an experiment
b. Complete a questionnaire
c. Record your observations
Question 10
Which method should be used to collect data about the colour of cars in a car park?
a. Record observations
b. Conduct a survey
c. Complete a questionnaire
d. Carry out an experiment
Question 11
A school has 1500 learners. To collect data from the learners, should you ask the whole population or
collect a sample?
a. Ask the whole population.
b. Collect a sample.
Question 12
Which method should you use to collect data about the favourite subject of learners in your school?
a. Conduct an experiment
b. Complete a questionnaire
c. Record your observations
Question 13
What is a conjecture?
a. A conclusion that has been proved
b. A topic for discussion
c. An opinion that is suspected to be true
Question 14
Data is collected about the amount of homework completed by learners in a school.
Which of these factors may affect the data collection?
Select all correct answers.
a. The age of the learner
b. The time of day the learner was asked
c. The lesson the learner was in
d. The number of subjects the learner studies
Question 15
Data is collected about the number of people who fly to a particular airport in one year.
The records of all the passengers who travel to the airport are used for that year.
Is this a population or a sample of the data?
a. Population
b. Sample
Question 16
Data is collected on the amount of time a phone is on standby before it needs recharging.
This is done by finding the times for five different phones.
Is this the population or a sample of the data?
a. Population
b. Sample
Question 17
Which of these situations describes the population of a survey on cars that travel past a house during
a day?
a. All the cars that drive past a house in one day
b. Every fifth car that drives past a house in one day
c. The cars that drive past a house during one hour of a day
d. All the blue cars that drive past a house in one day
Question 18
Sofia plans to collect data to find out about the benefits of living near a supermarket in her town.
She decides to ask a sample of people.
Which of these is a suitable sample?
a. 50 people who live in her town
b. 5 people who go to a particular supermarket
c. Someone who lives in each house within 100 m of a supermarket
Question 19
Sofia plans to collect data to find out about the benefits of living near a supermarket in her town.
What is the population for her survey?
a. Everyone who goes to a supermarket
b. Everyone who lives in her town
c. Everyone who lives within one kilometre of her home
Question 20
To find the average height of learners in a year at school, you decided to use the basketball players in
that year as your sample.
Your sample is biased because:
a. There are only a few basketball players
b. Basketball players are usually taller than average
c. Basketball players are not part of the population
