Data Handling for Year 7 Maths: Quizzes and Practice

Question 1

What is NOT a method of collecting data?

Accepted Answer

Reading books

Answer

Questionnaires

Answer

Interviews

Answer

Experiments

Question 2

Which type of graph is ideal for showing changes over time?

Accepted Answer

Line graph

Answer

Bar chart

Answer

Pie chart

Answer

Scatterplot

Question 3

What is the difference between a table and a chart?

Accepted Answer

Tables display data numerically, while charts present data visually.

Answer

Charts show data visually, while tables present data in a numerical format.

Question 4

Which of the following is NOT a method of collecting data for research?

Accepted Answer

Guessing the answer

Answer

Conducting surveys

Answer

Carrying out interviews

Answer

Running experiments

Question 5

What is an advantage of using a pie chart?

Accepted Answer

It can show the relative proportions of different categories.

Answer

It is easy to create.

Answer

It can display large amounts of data.

Answer

It is suitable for comparing trends over time.

Question 6

Which of the following is a characteristic of a random sample?

Accepted Answer

Each member of the population has a fair chance of being chosen.

Answer

The sample is large and biased.

Answer

The sample is small and representative of the population.

Answer

The sample is selected by convenience.

Question 7

A survey asked students to rate their happiness with school on a scale of 1 to 5, with 1 being very unhappy and 5 being very happy. The median score was 3. What can you conclude from this?

Accepted Answer

Half of the students are happier than average.

Answer

Most students are very happy with school.

Answer

There are more unhappy students than happy students.

Answer

The students' opinions are equally divided.

Question 8

What is the best way to show the heights of students in a class so that you can easily compare them?

Accepted Answer

Bar Chart

Answer

Table

Answer

Line Graph

Answer

Pie Chart

Question 9

What is the primary purpose of a frequency table?

Accepted Answer

To display how often each unique value appears in a dataset.

Answer

To present data visually using charts or graphs.

Answer

To group data into meaningful categories.

Answer

To make predictions about future events based on past data.

Question 10

Which of the following is not a potential limitation of using graphs to convey data?

Accepted Answer

Graphs are only suitable for small datasets.

Answer

Graphs can be misleading if designed poorly.

Answer

Graphs can be challenging to interpret for complex datasets.

Answer

Graphs may not always reveal all crucial aspects of the data.

Question 11

Which of the following is not a method for gathering data?

Accepted Answer

Mind reading

Answer

Surveys

Answer

Interviews

Answer

Observations

Question 12

What type of table displays the frequency of different data values?

Accepted Answer

Frequency table

Answer

Bar chart

Answer

Pie chart

Answer

Scatter plot

Question 13

The mean is a measure of:

Accepted Answer

Central tendency

Answer

Spread

Answer

Correlation

Answer

Frequency

Question 14

What do pie charts show?

Accepted Answer

The proportion of each category in the data.

Answer

They can show negative values.

Answer

They are useful for comparing large datasets.

Answer

They can be used to show changes over time.

Question 15

What is the range of a dataset?

Accepted Answer

The difference between the highest and lowest values.

Answer

The sum of all the values in the dataset.

Answer

The average of all the values in the dataset.

Answer

The number of values in the dataset.

Question 16

What is the primary purpose of a scatter plot?

Accepted Answer

To show the relationship between two variables.

Answer

To compare the means of two datasets.

Answer

To calculate the range of a dataset.

Answer

To find the outliers in a dataset.

Question 17

Which of these methods is not used for collecting data?

Accepted Answer

Guesswork

Answer

Surveys

Answer

Interviews

Answer

Observations

Question 18

Which of the following is a measurable quantity?

Accepted Answer

Height

Answer

Hair color

Answer

Gender

Answer

Favorite food

Question 19

Which of these is an advantage of using graphs to represent data?

Accepted Answer

They make data easier to read and understand.

Answer

They can hide patterns in the data.

Answer

They are more accurate than tables.

Answer

They can only be used to show small data sets.

Question 20

A pie chart is divided into 5 equal sectors. What percentage does each sector represent?

Accepted Answer

25%

Answer

10%

Answer

15%

Answer

20%

Question 21

Which of these is not a method used by scientists to collect data?

Accepted Answer

Watching television

Answer

Surveys

Answer

Observations

Answer

Experiments

Question 22

Which feature is not found in a table used to organize data?

Accepted Answer

Pictures

Answer

Rows

Answer

Columns

Answer

Headings

Question 23

Which type of graph represents data using bars?

Accepted Answer

Bar graph

Answer

Line graph

Answer

Pie chart

Answer

Scatterplot

Question 24

Which of the following is not a common type of data?

Accepted Answer

Abstract data

Answer

Numerical data

Answer

Categorical data

Answer

Ordinal data

Question 25

Which type of graph displays the relationship between two variables?

Accepted Answer

Scatterplot

Answer

Bar graph

Answer

Pie chart

Answer

Line graph

Question 26

Which type of graph represents data as segments of a circle?

Accepted Answer

Pie chart

Answer

Bar graph

Answer

Scatterplot

Answer

Line graph

Question 27

Identifying Invalid Data Collection Methods

Accepted Answer

Making assumptions

Answer

Surveys

Answer

Interviews

Answer

Observations

Question 28

Identifying Continuous Variables

Accepted Answer

Height

Answer

Shoe size (whole numbers)

Answer

Number of siblings

Answer

Favourite colour

Question 29

Population and Sample Distinction

Accepted Answer

A population includes all data, while a sample represents a smaller group from that data.

Answer

A sample includes all data, while a population represents a smaller group from that data.

Answer

A population is a group of people, while a sample is a group of animals.

Answer

A sample is a group of objects, while a population is a group of events.

Question 30

Which of these is NOT a way to represent data?

Accepted Answer

Story

Answer

Table

Answer

Chart

Answer

Graph

Question 31

What is the main reason to use a bar chart?

Accepted Answer

To compare different groups

Answer

To show changes over time

Answer

To show the relationship between two variables

Answer

To display large amounts of data

Question 32

What is the initial step when collecting data?

Accepted Answer

Decide why you need the data

Answer

Choose how you will collect the data

Answer

Design your data collection tool

Answer

Record the data

Question 33

Which of these is a categorical variable?

Accepted Answer

Gender

Answer

Age

Answer

Height

Answer

Temperature

Question 34

What is the main difference between qualitative and quantitative data?

Accepted Answer

Qualitative data is categorical, while quantitative data is numerical

Answer

Qualitative data is numerical, while quantitative data is categorical

Answer

Qualitative data can be measured, while quantitative data cannot

Answer

Quantitative data can be measured, while qualitative data cannot

Question 35

What does the median of a data set represent?

Accepted Answer

The middle value

Answer

The average value

Answer

The smallest value

Answer

The largest value

Question 36

What type of graph is most suitable for showing changes over time?

Accepted Answer

Line graph

Answer

Bar chart

Answer

Pie chart

Answer

Table

Question 37

What does the 'mean' of a data set tell us about the data?

Accepted Answer

Its central point

Answer

How spread out it is

Answer

Its most common value

Answer

Its middle value

Question 38

What does the 'mode' of a data set tell us?

Accepted Answer

Its most common value

Answer

Its average value

Answer

Its highest value

Answer

Its lowest value

Question 39

Which type of graph is used to show changes over time?

Accepted Answer

Line graph

Answer

Pie chart

Answer

Scatter plot

Answer

Histogram

Question 40

A scatter plot shows the relationship between two variables. If the points on the scatter plot form a straight line, what does it suggest?

Accepted Answer

There is a linear relationship between the variables.

Answer

There is no relationship between the variables.

Answer

There is a curvilinear relationship between the variables.

Answer

There is an inverse relationship between the variables.

Question 41

What is not a feature of a histogram?

Accepted Answer

There are gaps between the bars.

Answer

The bars touch each other.

Answer

The y-axis represents frequency.

Answer

The bars represent equal intervals.

Question 42

What are the three main methods of collecting data?

Accepted Answer

Interviews, questionnaires, and experimentation

Answer

Guesswork, interviews, and questionnaires

Answer

Experimentation, guesswork, and data mining

Answer

Questionnaires, data mining, and experimentation

Question 43

What is the primary purpose of a data table?

Accepted Answer

To display data in an organised and easy-to-read format

Answer

To create a visual representation of data

Answer

To draw conclusions about data

Answer

To store data for future use

Question 44

What does the frequency of a data point indicate?

Accepted Answer

The number of times it occurs in the data set

Answer

The average value of the data

Answer

The range of the data

Answer

The mode of the data

Question 45

What is the key difference between a qualitative variable and a quantitative variable?

Accepted Answer

Quantitative variables are numerical, while qualitative variables are categorical.

Answer

Qualitative variables are numerical, while quantitative variables are categorical.

Answer

Qualitative variables are continuous, while quantitative variables are discrete.

Answer

Quantitative variables are continuous, while qualitative variables are discrete.

Question 46

Which of the following is an example of a biased sample?

Accepted Answer

A survey of people who are members of a particular club

Answer

A random sample of students in a school

Answer

A census of the entire population

Answer

A sample of people who have a rare disease

Question 47

Which of these is NOT a way to collect data?

Accepted Answer

Guessing

Answer

Asking people questions

Answer

Watching and taking notes

Answer

Doing an experiment

Question 48

The number of students in each year group at a school is:

Year 7: 120
Year 8: 135
Year 9: 140
Year 10: 150

Which type of graph would be BEST to show this information?

Accepted Answer

Bar chart

Answer

Scatter plot

Answer

Line graph

Answer

Pie chart

Question 49

What makes a table easy to understand?

Accepted Answer

Clear headings for each column

Answer

Lots of colorful lines around the table

Answer

Lots of different fonts

Answer

Hidden information in some columns

Question 50

The ages of students in a class are: 12, 13, 14, 15, 16, 16, 17, 18. What is the most common age in the class?

Accepted Answer

16

Answer

15

Answer

13

Answer

18

Question 51

There are 100 students in a school. 25 of them like Science best. What fraction of the students like Science best?

Accepted Answer

25/100

Answer

0.25

Answer

1/4

Answer

25/70

Question 52

What is an important thing to think about when collecting data from people?

Accepted Answer

Asking for their permission first

Answer

Using bright colours in graphs

Answer

Adding extra details to tables

Question 53

This scatter plot shows how many hours students studied and their test scores: [Image of scatter plot showing a positive correlation]

What does this scatter plot tell us?

Accepted Answer

The more hours students studied, the higher their test scores tended to be.

Answer

There is no connection between hours studied and test scores.

Answer

The hours studied have no effect on test scores.

Answer

The more hours students studied, the lower their test scores tended to be.

Question 54

The average height of students in Year 7 is 135 cm. What can we NOT say for sure based on this information?

Accepted Answer

Every single student in Year 7 is taller than 135 cm.

Answer

About half the students in Year 7 are taller than 135 cm.

Answer

Most students in Year 7 are taller than 135 cm.

Answer

Some students in Year 7 are taller than 135 cm.