Data Handling: Master Data Collection and Representation Skills

Question 1

Which of these is a measure of how spread out the data is, rather than a measure of the middle of the data?

Accepted Answer

Range

Answer

Mean

Answer

Median

Answer

Mode

Question 2

What is the main purpose of a histogram?

Accepted Answer

To visually represent the distribution of a continuous variable

Answer

To represent the distribution of a categorical variable

Answer

To facilitate comparison of distributions from multiple data sets

Answer

To enable predictions about the data

Question 3

What type of graph is most appropriate for representing the frequency of different categories in a dataset?

Accepted Answer

Pie chart

Answer

Bar chart

Answer

Line graph

Answer

Scatter plot

Question 4

What is the primary purpose of a frequency table?

Accepted Answer

To summarize and organize raw data

Answer

To identify trends and patterns

Answer

To make predictions about future events

Answer

To determine the mean and median of the data

Question 5

Which type of graph best represents the distribution of a data set?

Accepted Answer

Histogram

Answer

Bar chart

Answer

Pie chart

Answer

Scatter plot

Question 6

What is the distinction between a population and a sample in statistical studies?

Accepted Answer

Population includes all relevant data, while a sample is a smaller representative subset.

Answer

Sample includes all relevant data, while a population is a smaller representative subset.

Answer

Population is the total number of data values, while a sample is the mean.

Answer

Sample is the total number of data values, while a population is the mean.

Question 7

Which of the following is not considered a measure of central tendency?

Accepted Answer

Range

Answer

Mean

Answer

Median

Answer

Mode

Question 8

Which of these is not a measure of dispersion?

Accepted Answer

Median

Answer

Range

Answer

Variance

Answer

Standard deviation

Question 9

What is the difference between a categorical and a quantitative variable?

Accepted Answer

Categorical variables belong to distinct groups, while quantitative variables can assume any value within a range.

Answer

Quantitative variables belong to distinct groups, while categorical variables can assume any value within a range.

Answer

Categorical variables are measurable, while quantitative variables are not.

Answer

Quantitative variables are measurable, while categorical variables are not.

Question 10

How do you collect data by asking people about their thoughts, feelings, or actions?

Accepted Answer

Survey

Answer

Observation

Answer

Experiment

Question 11

Which of the following is a non-probability sampling method?

Accepted Answer

Convenience sampling

Answer

Systematic sampling

Answer

Stratified sampling

Answer

Cluster sampling

Question 12

A scatterplot is specifically used to illustrate:

Accepted Answer

The correlation between two numerical variables

Answer

The frequency of different categories

Answer

The distribution of data over time

Answer

The mean and standard deviation of a dataset

Question 13

A cumulative frequency graph displays the:

Accepted Answer

Total frequency up to each data point

Answer

Frequency of individual data points

Answer

Relationship between two variables

Answer

Variation within a dataset

Question 14

Which type of chart is NOT a variation of a bar chart?

Accepted Answer

Pie chart

Answer

Vertical bar chart

Answer

Horizontal bar chart

Answer

Stacked bar chart

Question 15

A contingency table is a tabular representation used to analyze the relationship between:

Accepted Answer

Two or more categorical variables

Answer

A numerical variable and a categorical variable

Answer

Two numerical variables

Answer

A categorical variable and a time series

Question 16

What is the main purpose of a frequency table?

Accepted Answer

To organize and summarize data

Answer

To display data in a graphical format

Answer

To calculate the mean and median

Answer

To test hypotheses

Question 17

What is the distinction between a mean and a median?

Accepted Answer

The mean is the average of all data points, whereas the median is the middle value.

Answer

The median is the average of all data points, whereas the mean is the middle value.

Answer

The mean is the sum of all data points, whereas the median is the middle value.

Answer

There is no distinction between the mean and the median.

Question 18

Which of the following is not a measure of dispersion?

Accepted Answer

Mean

Answer

Range

Answer

Variance

Answer

Standard deviation

Question 19

What is the purpose of a scatterplot?

Accepted Answer

To display the relationship between two variables

Answer

To compare two or more groups of data

Answer

To identify outliers

Answer

To make predictions

Question 20

What is the formula for a line of best fit?

Accepted Answer

y = mx + c

Answer

y = c + mx

Answer

x = my + c

Answer

x = c + my

Question 21

Which type of graph is most appropriate for displaying the distribution of a continuous variable?

Accepted Answer

Histogram

Answer

Bar chart

Answer

Pie chart

Answer

Scatter plot

Question 22

Which measure of variability is most affected by outliers?

Accepted Answer

Range

Answer

Variance

Answer

Standard deviation

Answer

Coefficient of variation

Question 23

Which of the following is a measure of the strength and direction of the linear relationship between two variables?

Accepted Answer

Pearson's correlation coefficient

Answer

Regression coefficient

Answer

Odds ratio

Answer

Relative risk

Question 24

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

Accepted Answer

Equation

Answer

Table

Answer

Chart

Answer

Graph

Question 25

What is the primary purpose of a frequency table?

Accepted Answer

To display the distribution of data within a dataset

Answer

To compare different datasets and identify similarities or differences

Answer

To calculate the mean, median, and mode of a dataset

Answer

To determine the range and standard deviation of a dataset

Question 26

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

Accepted Answer

Guessing

Answer

Interviews

Answer

Observations

Answer

Surveys

Question 27

A bar chart is most suitable for representing data that:

Accepted Answer

Compares different categories

Answer

Shows changes over time

Answer

Estimates the area under a curve

Answer

Illustrates the distribution of data

Question 28

A scatterplot is used to show:

Accepted Answer

The relationship between two variables

Answer

The mean of a dataset

Answer

The area under a normal distribution curve

Answer

The probability of an event

Question 29

Which of the following is a potential source of bias in data collection?

Accepted Answer

Leading questions

Answer

Large sample size

Answer

Random sampling

Question 30

A histogram is a graphical representation of:

Accepted Answer

The distribution of data

Answer

The central tendency of data

Answer

The relationship between two variables

Question 31

Which of the following is **not** a key component of a good data collection plan?

Accepted Answer

Guessing the outcome

Answer

Selecting the appropriate data collection method

Answer

Considering potential sources of bias

Answer

Defining the research question

Question 32

The correlation coefficient (r) measures the:

Accepted Answer

Strength and direction of a linear relationship

Answer

Mean of a dataset

Answer

Area under a normal distribution curve

Answer

Probability of an event

Question 33

A pie chart can be used to represent data that:

Accepted Answer

Shows proportions of a whole

Answer

Compares different categories

Answer

Illustrates the distribution of data

Answer

Estimates the area under a curve

Question 34

Which of the following is a limitation of using tables to represent data?

Accepted Answer

Can be difficult to identify trends

Answer

Can be used to represent large datasets

Answer

Suitable for all types of data

Answer

Easy to interpret

Question 35

Which of the following data collection methods is most appropriate for obtaining data from a large population?

Accepted Answer

Survey

Answer

Interview

Answer

Observational study

Answer

Case study

Question 36

A group of students collected data on the number of pets owned by their classmates. The data is shown below:

1, 2, 3, 4, 5, 1, 2, 3

What is the mode of this data set?

Accepted Answer

2 and 3

Answer

5

Answer

1

Answer

4

Question 37

Which type of graph is most suitable for representing data that shows the relationship between two variables?

Accepted Answer

Scatter plot

Answer

Bar chart

Answer

Pie chart

Answer

Histogram

Question 38

Which type of graph is most appropriate for representing data that shows trends over time?

Accepted Answer

Line graph

Answer

Histogram

Answer

Scatter plot

Answer

Bar chart

Question 39

Which of the following types of data can be represented by a pie chart?

Accepted Answer

Categorical

Answer

Ratio

Answer

Ordinal

Answer

Numerical

Question 40

The following data shows the number of students in each year group at a school:

Year 7: 150
Year 8: 165
Year 9: 170
Year 10: 175
Year 11: 180

Which of the following graphs would be most suitable for representing this data?

Accepted Answer

Bar chart

Answer

Line graph

Answer

Histogram

Answer

Scatter plot

Question 41

Which of the following is NOT a type of data representation?

Accepted Answer

Equation

Answer

Chart

Answer

Graph

Answer

Table

Question 42

When collecting data, it is important to ensure that:

Accepted Answer

The sample is representative of the population.

Answer

The data is collected using a variety of methods.

Answer

The data is collected quickly.

Answer

The data is presented in a visually appealing way.

Question 43

Which of the following is a limitation of using a pie chart?

Accepted Answer

It can be difficult to compare small values.

Answer

It is suitable for large datasets.

Answer

It can show trends over time.

Question 44

Which of the following is a measure of central tendency?

Accepted Answer

Mean

Answer

Standard deviation

Answer

Range

Answer

Variance

Question 45

The range of a dataset is the difference between the:

Accepted Answer

Maximum and minimum values.

Answer

First quartile and third quartile.

Answer

Median and mode.

Answer

Mean and standard deviation.

Question 46

When creating a frequency table, the frequency of a value is the:

Accepted Answer

Number of times it occurs.

Answer

Sum of all its values.

Answer

Average of all its values.

Answer

Difference between its maximum and minimum values.

Question 47

A researcher wants to investigate the average height of students in a school. Which method of data collection would be most appropriate?

Accepted Answer

Survey

Answer

Simulation

Answer

Observation

Answer

Experiment

Question 48

A pie chart is best suited for representing:

Accepted Answer

Parts of a whole

Answer

Distribution of data across categories

Answer

Relationship between two variables

Answer

Trends over time

Question 49

A bar chart showing the number of students in each year group at a school is an example of:

Accepted Answer

Discrete data

Answer

Categorical data

Answer

Continuous data

Question 50

The average temperature recorded in a city over a month is an example of:

Accepted Answer

Mean

Answer

Range

Answer

Median

Answer

Mode

Question 51

A survey asks participants to rate their satisfaction with a service on a scale of 1 to 5. This type of data is considered:

Accepted Answer

Ordinal

Answer

Interval

Answer

Nominal

Answer

Ratio

Question 52

Which of the following is NOT a common type of data collection bias?

Accepted Answer

Random sampling bias

Answer

Response bias

Answer

Selection bias

Question 53

A scatter plot is used to represent:

Accepted Answer

The relationship between two variables

Answer

Distribution of data across categories

Answer

Parts of a whole

Answer

Trends over time

Question 54

A line graph is most appropriate for showing:

Accepted Answer

Trends over time

Answer

Parts of a whole

Answer

Relationship between two variables

Answer

Distribution of data across categories

Question 55

The difference between the highest and lowest values in a dataset is called the:

Accepted Answer

Range

Answer

Median

Answer

Mean

Answer

Mode

Question 56

A researcher wants to investigate the impact of a new teaching method on students' test scores. Which type of data collection would be most appropriate?

Accepted Answer

Experiment

Answer

Survey

Answer

Observation