Data Handling for Year 7 Maths: Quizzes and Practice

Question 1

What is the first step in handling data?

Accepted Answer

Collecting the data

Answer

Showing the data

Answer

Drawing conclusions from the data

Answer

Analyzing the data

Question 2

To find out the favourite ice cream flavours of students in your school, which method of data collection would be the most appropriate?

Accepted Answer

Survey using a questionnaire

Answer

Observing students' ice cream purchases in the school canteen

Answer

Asking the school principal their opinion on students' favourite ice cream flavours

Answer

Examining the sales records of the local ice cream shop

Question 3

What is the best way to gather information about the favorite colors of your classmates?

Accepted Answer

Conduct a survey by asking them directly

Answer

Perform an experiment by mixing different colors

Answer

Read a book about color theory

Answer

Guess based on your own observations

Question 4

Which of the following is NOT a way to show data?

Accepted Answer

Word cloud

Answer

Tally chart

Answer

Bar chart

Answer

Histogram

Question 5

What is the most common number in the following set: 5, 7, 9, 7, 11, 7?

Accepted Answer

7

Answer

5

Answer

9

Answer

11

Question 6

What is the purpose of a data key?

Accepted Answer

To explain the symbols or colors used in a graph

Answer

To collect data from respondents

Answer

To analyze the results of a survey

Answer

To present data in a visually appealing way

Question 7

What is the difference between information that is described using numbers and information that is described using words?

Accepted Answer

Numerical information uses numbers, while non-numerical information uses words

Answer

Non-numerical information uses numbers, while numerical information uses words

Answer

Numerical information is collected through experiments, while non-numerical information is collected through surveys

Answer

Numerical information is subjective, while non-numerical information is objective

Question 8

Which of the following is not a method used to gather information?

Accepted Answer

Predictions

Answer

Surveys

Answer

Experiments

Answer

Interviews

Question 9

Which type of graph would be best for comparing the popularity of different sports activities?

Accepted Answer

Bar chart

Answer

Pie chart

Answer

Line graph

Answer

Scatter plot

Question 10

Which of the following statements about data is true?

Accepted Answer

Data can be useful for making informed decisions.

Answer

Data should always be accepted as accurate without question.

Answer

Data should only be represented in graphs.

Answer

Data is not valuable unless it is perfectly accurate.

Question 11

What is an advantage of using a pie chart?

Accepted Answer

It shows the relative size of each category.

Answer

It makes it easy to see exact numbers.

Answer

It is a good way to compare data sets.

Answer

It is the most visually appealing graph type.

Question 12

What is a limitation of using a bar chart?

Accepted Answer

It can be difficult to compare a large number of data points.

Answer

It does not show the relative size of each category.

Answer

It is a visually confusing graph type.

Answer

It is difficult to create a bar chart.

Question 13

A line graph shows the temperature over a period of time. The line graph shows a gradual increase in temperature over time. What does this indicate?

Accepted Answer

The temperature is increasing steadily.

Answer

The temperature is decreasing slowly.

Answer

The temperature is fluctuating rapidly.

Answer

The temperature is staying the same.

Question 14

Which of the following is NOT a way to gather information?

Accepted Answer

Guessing

Answer

Survey

Answer

Experiment

Answer

Interview

Question 15

What is a tally chart used for?

Accepted Answer

Recording data in a structured way

Answer

Organizing data into groups

Answer

Drawing conclusions from data

Answer

Showing data visually

Question 16

A pictogram differs from a bar chart in that:

Accepted Answer

It uses pictures to represent data

Answer

It only shows numerical data

Answer

It is simpler to make

Answer

It is less precise

Question 17

An experiment is being done to test the effect of different fertilizers on plant growth. What is the independent variable in this experiment?

Accepted Answer

The type of fertilizer

Answer

The plant growth

Answer

The time period

Answer

The temperature

Question 18

What does the height of each bar in a bar chart show?

Accepted Answer

How many times a group appears

Answer

What percentage a group represents

Answer

The average value of a group

Answer

The range of values in a group

Question 19

Why do we use pictograms?

Accepted Answer

To show information using pictures

Answer

To see how information is spread out

Answer

To compare different groups

Answer

To calculate averages

Question 20

What is the difference between a qualitative and quantitative variable?

Accepted Answer

Qualitative variables are categorical, while quantitative variables are numerical.

Answer

Qualitative variables are numerical, while quantitative variables are categorical.

Answer

Qualitative variables are continuous, while quantitative variables are discrete.

Answer

Qualitative variables are discrete, while quantitative variables are continuous.

Question 21

Which of the following is an example of a discrete variable?

Accepted Answer

Number of siblings

Answer

Height

Answer

Age

Answer

Temperature

Question 22

What is the range of this data set: 5, 7, 9, 11, 13?

Accepted Answer

8

Answer

6

Answer

10

Answer

12

Question 23

What is the best conclusion to draw from the following data: Boys: 60%, Girls: 40%?

Accepted Answer

There are more boys than girls.

Answer

There are more girls than boys.

Answer

The percentage of boys is equal to the percentage of girls.

Answer

The data is not enough to tell.

Question 24

On a scatter plot, what does a positive correlation between two variables indicate?

Accepted Answer

The variables increase and decrease together.

Answer

The variables have no relationship to each other.

Answer

The points on the scatter plot are spread out randomly.

Answer

The variables both have negative values.

Question 25

A tally chart uses marks to represent:

Accepted Answer

Numbers of items

Answer

Categories of items

Answer

Differences between items

Answer

Relationships between items

Question 26

What does the mode of a data set represent?

Accepted Answer

The value that occurs most frequently

Answer

The value that occurs least frequently

Answer

The average value of the data set

Answer

The middle value of the data set

Question 27

Which of the following is an example of a qualitative variable?

Accepted Answer

Gender

Answer

Height

Answer

Age

Answer

Income

Question 28

A scatter plot is used to:

Accepted Answer

Show relationships between two variables

Answer

Compare different categories of data

Answer

Represent frequencies of data

Answer

Predict future trends

Question 29

Which of the following is a valid conclusion that can be drawn from a data set?

Accepted Answer

The data supports a hypothesis.

Answer

The data proves a hypothesis.

Answer

The data is always 100% accurate.

Answer

The data cannot be used to make predictions.

Question 30

What is the main purpose of data analysis?

Accepted Answer

To make sense of data

Answer

To prove a hypothesis

Answer

To collect more data

Answer

To predict the future

Question 31

Which of the following is **not** a method of collecting data?

Accepted Answer

Guesswork

Answer

Surveys

Answer

Experiments

Answer

Interviews

Question 32

Which of the following is **not** an advantage of using bar charts?

Accepted Answer

Can be used to represent only discrete data

Answer

Easy to compare data

Answer

Clear visual representation

Answer

Can show trends over time

Question 33

A pictogram uses symbols to represent data.

Accepted Answer

True

Answer

False

Question 34

Quantitative variables are numbers, while qualitative variables are categories.

Accepted Answer

True

Answer

False

Question 35

To ensure a reliable survey, it is a good idea to:

Accepted Answer

Test the survey on a few people first

Answer

Ask leading questions

Answer

Use a small sample size

Answer

Make the survey as long as possible

Question 36

The purpose of a hypothesis in an experiment is to:

Accepted Answer

Predict the results

Answer

Explain the results

Answer

Control the variables

Answer

Collect the data

Question 37

Which of the following is an example of a continuous variable?

Accepted Answer

Age

Answer

Gender

Answer

Eye color

Answer

Shoe size

Question 38

Which of the following is not a method of gathering information?

Accepted Answer

Telepathy

Answer

Surveys

Answer

Questionnaires

Answer

Experiments

Question 39

What is the purpose of a tally chart?

Accepted Answer

To show how often something happens

Answer

To compare different groups of data

Answer

To draw conclusions from data

Answer

To predict future outcomes

Question 40

What does the height of a bar in a bar chart represent?

Accepted Answer

The frequency of a particular category

Answer

The number of data points

Answer

The mean of the data

Answer

The standard deviation of the data

Question 41

Which of the following is NOT a conclusion that can be drawn from information?

Accepted Answer

Everyone loves mathematics.

Answer

Most people like blue.

Answer

Boys are usually taller than girls.

Answer

More people enjoy reading now than before.

Question 42

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

Accepted Answer

Analysis

Answer

Surveys

Answer

Interviews

Answer

Experiments

Question 43

What is the main purpose of a tally chart?

Accepted Answer

To organize and count data

Answer

To present data visually

Answer

To draw conclusions from data

Answer

To compare different sets of data

Question 44

Which type of chart is most suitable for comparing data over periods of time?

Accepted Answer

Line graph

Answer

Bar chart

Answer

Pictogram

Answer

Pie chart

Question 45

Which of the following is NOT a potential source of error when collecting data?

Accepted Answer

Using a random sample

Answer

Bias in the sample

Answer

Incorrect recording of data

Answer

Misinterpreting the data

Question 46

Which sampling method gives every person in a group an equal chance of being chosen?

Accepted Answer

Random sampling

Answer

Systematic sampling

Answer

Stratified sampling

Answer

Convenience sampling

Question 47

Which of the following is not a valid method of data collection?

Accepted Answer

Estimates

Answer

Surveys

Answer

Experiments

Answer

Observations

Question 48

What type of graph is most suitable for representing data that shows the frequency of different values?

Accepted Answer

Bar chart

Answer

Pie chart

Answer

Scatter plot

Answer

Line graph

Question 49

Which of the following describes a pictogram?

Accepted Answer

A graph that represents data using symbols

Answer

A graph that shows data using bars

Answer

A graph that shows data as a circle divided into sections

Answer

A graph that shows data using a line

Question 50

What is the value that appears most frequently in the data set: 10, 12, 10, 15, 12, 10, 18?

Accepted Answer

10

Answer

12

Answer

15

Answer

18

Question 51

A survey asked 100 students their favourite colour. 35 students said blue. What percentage of students chose blue?

Accepted Answer

35%

Answer

3.5%

Answer

65%

Answer

100%

Question 52

Which data set has the largest range?

Accepted Answer

5, 7, 9, 11, 13

Answer

2, 4, 6, 8, 10

Answer

3, 5, 7, 9, 11

Answer

4, 6, 8, 10, 12

Question 53

What type of graph is most effective for showing trends over time?

Accepted Answer

Line graph

Answer

Bar chart

Answer

Pie chart

Answer

Scatter plot

Question 54

Which of these methods involves gathering information by asking people questions?

Accepted Answer

Survey

Answer

Experiment

Answer

Guesswork

Answer

Dream analysis

Question 55

What is the main purpose of a tally chart?

Accepted Answer

To organize collected data

Answer

To present data visually

Answer

To calculate probabilities

Answer

To make predictions

Question 56

Which type of graph is best for comparing data from different groups?

Accepted Answer

Bar chart

Answer

Line graph

Answer

Pie chart

Answer

Scatter plot

Question 57

A survey question that allows respondents to select multiple answers is called a:

Accepted Answer

Multiple-choice question

Answer

Open question

Answer

Closed question

Answer

Likert scale question

Question 58

Which of the following is NOT a feature of a good sample of data?

Accepted Answer

It should be biased towards a particular outcome

Answer

It should represent the whole group being studied

Answer

It should be chosen randomly

Answer

It should be large enough to be reliable

Question 59

Which of these is a limitation of a pictogram?

Accepted Answer

It can be hard to compare data precisely

Answer

It can be visually appealing

Answer

It is suitable for large data sets

Answer

It is easy to understand

Question 60

A data set has a mean of 10 and a median of 12. Which of the following is most likely true?

Accepted Answer

The data is skewed to the right.

Answer

The data is skewed to the left.

Answer

The data is normally distributed.

Answer

The data has no outliers.

Question 61

Which of these is an example of a categorical variable?

Accepted Answer

Favourite colour

Answer

Height

Answer

Age

Answer

Number of pets

Question 62

What is the most suitable method for gathering data about the preferred colors of students in your class?

Accepted Answer

Conduct a survey

Answer

Measure the height of each student

Answer

Count the number of windows in the classroom

Answer

Weigh each student

Question 63

Which of the following ensures that a survey is unbiased?

Accepted Answer

Selecting respondents randomly

Answer

Asking leading questions

Answer

Using a small sample size

Answer

Offering incentives for participation

Question 64

Which of the following conclusions can be drawn from the following data set: 5, 7, 9, 11, 13?

Accepted Answer

The data is increasing

Answer

The data is decreasing

Answer

The data is constant

Answer

The data is random