Interpreting Data: Master Data Analysis Skills for Year 7 Maths

Question 1

Which option is NOT a type of data display?

Accepted Answer

Sequence

Answer

Table

Answer

Chart

Answer

Graph

Question 2

Which type of graph is most suitable for showing the relationship between two variables?

Accepted Answer

Scatter graph

Answer

Bar graph

Answer

Pie chart

Answer

Line graph

Question 3

What type of graph is used to show the distribution of continuous data?

Accepted Answer

Histogram

Answer

Bar graph

Answer

Pie chart

Answer

Line graph

Question 4

Which factor is NOT important to consider when selecting a data display?

Accepted Answer

The font colour used

Answer

The purpose of the display

Answer

The audience for the display

Answer

The availability of data

Question 5

What is the key difference between qualitative and quantitative data?

Accepted Answer

Quantitative data is numerical, while qualitative data is non-numerical.

Answer

Qualitative data is numerical, while quantitative data is non-numerical.

Answer

Qualitative data is categorical, while quantitative data is continuous.

Answer

Quantitative data is categorical, while qualitative data is continuous.

Question 6

Which of the following is an example of making an inference from data?

Accepted Answer

Predicting future sales based on past data

Answer

Creating a bar chart from a data set

Answer

Calculating the mean of a sample

Answer

Finding the probability of rolling a dice

Question 7

On a bar chart, the vertical axis shows:

Accepted Answer

The frequency or value of the data

Answer

The categories being compared

Answer

The labels for the data points

Answer

The title of the chart

Question 8

The range of a data set refers to:

Accepted Answer

The difference between the highest and lowest values

Answer

The average of all the values

Answer

The most frequently occurring value

Answer

The number of values in the data set

Question 9

Which of the following is an example of qualitative data?

Accepted Answer

Eye colour

Answer

Height

Answer

Temperature

Answer

Age

Question 10

A frequency table displays the:

Accepted Answer

Number of times each value occurs in a data set

Answer

Mean, median, and mode of a data set

Answer

Relationship between two variables

Answer

Distribution of data over time

Question 11

A cumulative frequency graph shows:

Accepted Answer

The total frequency up to a given value

Answer

The frequency of each individual value

Answer

The relationship between two variables

Answer

The distribution of data over time

Question 12

The most accurate method to describe a trend in a data set is by:

Accepted Answer

Using a line of best fit

Answer

Drawing a freehand curve

Answer

Simply connecting the data points

Answer

Ignoring the outliers

Question 13

Which graph is best suited for presenting data that changes over time?

Accepted Answer

Line Graph

Answer

Pie chart

Answer

Bar chart

Answer

Scatter plot

Question 14

Which measure of central tendency represents the middle value in a data set when arranged in order?

Accepted Answer

Median

Answer

Mean

Answer

Mode

Answer

Range

Question 15

Which of the following is a characteristic of a scatter plot?

Accepted Answer

Illustrates the relationship between two variables

Answer

Uses bars to represent data

Answer

Displays data in a circular format

Answer

Indicates the standard deviation of a data set

Question 16

What is the main purpose of a frequency table?

Accepted Answer

To show the number of times each value appears in a data set

Answer

To represent data visually in a graph

Answer

To calculate the mean of a data set

Answer

To determine the correlation between variables

Question 17

A data set has a mean of 10 and a median of 11. What can be concluded about the data distribution?

Accepted Answer

The data is skewed towards higher values.

Answer

The data is skewed towards lower values.

Answer

The data is evenly distributed.

Answer

The data is bimodal.

Question 18

A box plot displays the minimum, maximum, and median values of a data set. Which measure of spread does it also show?

Accepted Answer

Interquartile Range

Answer

Range

Answer

Standard Deviation

Answer

Variance

Question 19

What type of graph is appropriate for showing the distribution of data?

Accepted Answer

Histogram

Answer

Line graph

Answer

Scatter plot

Answer

Bar chart

Question 20

Which measure represents the average of all values in a data set?

Accepted Answer

Mean

Answer

Mode

Answer

Median

Answer

Range

Question 21

What does the interquartile range indicate?

Accepted Answer

The range of the middle half of the data

Answer

The difference between the minimum and maximum values

Answer

The average of the data set

Answer

The frequency of the most occurring value

Question 22

Which term describes a data set that is spread out evenly on both sides of the mean?

Accepted Answer

Symmetrical

Answer

Skewed

Answer

Uniform

Answer

Bimodal

Question 23

Which value represents the middle value of a data set when arranged in order from least to greatest?

Accepted Answer

Median

Answer

Mode

Answer

Range

Answer

Mean

Question 24

Which of these is a fundamental aspect of statistical literacy?

Accepted Answer

Understanding and interpreting data

Answer

Collecting and presenting data

Answer

Predicting future events

Answer

Using software for data analysis

Question 25

Which type of graph is best suited for illustrating changes over time?

Accepted Answer

Line graph

Answer

Pie chart

Answer

Bar chart

Answer

Scatterplot

Question 26

What is the middle value of a dataset known as?

Accepted Answer

Median

Answer

Mean

Answer

Mode

Answer

Range

Question 27

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

Accepted Answer

Occupation

Answer

Height

Answer

Age

Answer

Weight

Question 28

What is the key difference between a population and a sample?

Accepted Answer

A sample represents a subset of a population.

Answer

A population is generally smaller than a sample.

Answer

A population is always representative of the entire group.

Answer

A sample is always accurate.

Question 29

Which step is NOT typically included in the data interpretation process?

Accepted Answer

Experimentation

Answer

Data collection

Answer

Data analysis

Answer

Drawing conclusions

Question 30

Which of the following is a measure of central tendency?

Accepted Answer

Mean

Answer

Range

Answer

Standard deviation

Answer

Frequency

Question 31

A scatter plot shows the relationship between two sets of data. What does a positive correlation indicate?

Accepted Answer

As one value increases, the other value tends to increase

Answer

As one value increases, the other value tends to decrease

Answer

There is no relationship between the two values

Answer

The data is misleading

Question 32

Which of the following steps is NOT involved in the process of data interpretation?

Accepted Answer

Changing data

Answer

Collecting data

Answer

Organising data

Answer

Drawing conclusions

Question 33

What's the key difference between descriptive and inferential statistics?

Accepted Answer

Descriptive statistics describe data, while inferential statistics draw conclusions about a larger group.

Answer

Descriptive statistics use numbers only, while inferential statistics use both numbers and words.

Answer

Descriptive statistics are more important than inferential statistics.

Answer

Inferential statistics are more accurate than descriptive statistics.

Question 34

Which of the following ways is NOT used to represent data?

Accepted Answer

Poem

Answer

Table

Answer

Chart

Answer

Graph

Question 35

What is the main difference between a bar chart and a pie chart?

Accepted Answer

Bar charts show individual values, while pie charts show proportions.

Answer

Bar charts show proportions, while pie charts show individual values.

Answer

Bar charts are used for discrete data, while pie charts are used for continuous data.

Answer

Pie charts are used for discrete data, while bar charts are used for continuous data.

Question 36

Which type of graph is the best choice to display trends that occur over time?

Accepted Answer

Line graph

Answer

Scatter plot

Answer

Histogram

Answer

Frequency polygon

Question 37

What does the vertical (y) axis of a graph represent?

Accepted Answer

The dependent variable

Answer

The independent variable

Answer

The frequency of data points

Answer

The range of data points

Question 38

What mathematical operation is used to calculate the range of a data set?

Accepted Answer

Maximum value minus Minimum value

Answer

Mean value minus Minimum value

Answer

Median value minus Maximum value

Answer

Mode value minus Mean value

Question 39

Which type of data distribution resembles a bell-shaped curve?

Accepted Answer

Normal distribution

Answer

Skewed distribution

Answer

Uniform distribution

Answer

Bimodal distribution

Question 40

What is the main purpose of creating a stem and leaf plot?

Accepted Answer

To visualize the distribution of data

Answer

To calculate the mean and median

Answer

To identify outliers

Answer

To determine the mode

Question 41

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

Accepted Answer

Gender

Answer

Height

Answer

Age

Answer

Temperature

Question 42

What is the key difference between a population and a sample?

Accepted Answer

A population is the entire group, while a sample is a smaller representative part of the group.

Answer

A sample is the entire group, while a population is a smaller representative part of the group.

Answer

A population is the average value, while a sample is made up of individual values.

Answer

A sample is the average value, while a population is made up of individual values.

Question 43

Which of the following is not a form of data visualisation?

Accepted Answer

Article

Answer

Table

Answer

Chart

Answer

Diagram

Question 44

What does the median of a dataset represent?

Accepted Answer

The middle value

Answer

The average value

Answer

The sum of all values

Answer

The highest value

Question 45

What type of graph is most suited to show changes over time?

Accepted Answer

Line graph

Answer

Pie chart

Answer

Scatter plot

Answer

Histogram

Question 46

What is the purpose of a frequency table?

Accepted Answer

To group data into ranges

Answer

To display raw data

Answer

To calculate mean and median

Answer

To display data trends

Question 47

Which measure of spread describes how data is scattered around the mean?

Accepted Answer

Standard deviation

Answer

Range

Answer

Variance

Answer

Interquartile range

Question 48

A correlation coefficient close to -1 indicates:

Accepted Answer

A strong negative relationship

Answer

A strong positive relationship

Answer

A weak negative relationship

Answer

No relationship

Question 49

Which statistical technique can be used to make predictions based on historical data?

Accepted Answer

Regression analysis

Answer

Hypothesis testing

Answer

Sampling

Answer

Clustering

Question 50

Which of these is NOT a way to represent data?

Accepted Answer

Essay

Answer

Bar Graph

Answer

Bubble Chart

Answer

Line Graph

Question 51

What does the x-axis of a graph usually show?

Accepted Answer

The variable that is being measured

Answer

The units of measurement

Answer

The title of the graph

Answer

The name of the person who created the graph

Question 52

Which type of graph shows data in a circle divided into sections?

Accepted Answer

Pie chart

Answer

Bar graph

Answer

Line graph

Answer

Scatter plot

Question 53

What is the main difference between a histogram and a bar graph?

Accepted Answer

Histograms show individual data points, while bar graphs show grouped data

Answer

Bar graphs show individual data points, while histograms show grouped data

Answer

Histograms show changes over time, while bar graphs do not

Answer

Bar graphs show changes over time, while histograms do not

Question 54

Which measure of central tendency is most affected by outliers?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 55

Which of the following is NOT a measure of dispersion?

Accepted Answer

Mean

Answer

Standard deviation

Answer

Variance

Answer

Range

Question 56

Which type of sampling method ensures that every individual in the population has an equal chance of being selected?

Accepted Answer

Random sampling

Answer

Systematic sampling

Answer

Stratified sampling

Answer

Cluster sampling

Question 57

What is the main purpose of a confidence interval?

Accepted Answer

To estimate the population mean with some uncertainty

Answer

To estimate the population mean with certainty

Answer

To test the significance of a hypothesis

Answer

To determine the sample size for a study

Question 58

Which of the following is NOT a common type of data display?

Accepted Answer

Text summary

Answer

Table

Answer

Chart

Answer

Graph

Question 59

A line graph is best suited for displaying data that:

Accepted Answer

Changes over time

Answer

Is grouped into categories

Answer

Compares different values

Answer

Shows proportions of a whole

Question 60

A bar chart is most useful for comparing:

Accepted Answer

Frequencies

Answer

Proportions

Answer

Time series

Answer

Distributions

Question 61

Which of the following graphs shows the total number of occurrences up to each data point?

Accepted Answer

Cumulative frequency graph

Answer

Histogram

Answer

Scatter plot

Answer

Pie chart

Question 62

The outlier in a data set is a value that:

Accepted Answer

Is significantly different from the other values

Answer

Is the smallest value

Answer

Is the largest value

Answer

Is the middle value

Question 63

A histogram is best suited for displaying data that is:

Accepted Answer

Binned

Answer

Continuous

Answer

Categorical

Answer

Ordinal

Question 64

A scatter plot is used to:

Accepted Answer

Show the relationship between two variables

Answer

Show the distribution of a data set

Answer

Show the cumulative frequency of a data set

Answer

Show the mean and mode of a data set