GCSE Statistics (Edexcel) 2025/2026
Exam Questions and Verified Answers |
Already Graded A+
What is raw data? - 🧠 ANSWER ✔✔Unprocessed data that has just been
collected and needs to be ordered, grouped, rounded, cleaned.
What is qualitative data? - 🧠 ANSWER ✔✔Non-numerical, descriptive data
such as eye/hair colour or gender. Often subjective so usually more difficult
to analyse.
What is quantitative data? - 🧠 ANSWER ✔✔Numerical data that can be
measured with numbers. Easier to analyse than qualitative data. Example,
height, weights, marks in an exam etc.
What is discrete data? - 🧠 ANSWER ✔✔Data that only takes particular
values (not necessarily whole numbers) such as shoe size or number of
people.
What is continuous data? - 🧠 ANSWER ✔✔Data that can take any value
e.g. height, weight.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
,What is categorical data? - 🧠 ANSWER ✔✔Data that can be sorted into
non-overlapping categories such as gender. Used for qualitative data so
that it can be more easily processed.
What is ordinal data? - 🧠 ANSWER ✔✔Quantitative data that can be given
an order or ranked on a rating scale, e.g. marks in an exam.
What is bivariate data? - 🧠 ANSWER ✔✔Data that involves measuring 2
variables. Can be qualitative or quantitative, grouped or ungrouped. Usually
used with scatter diagrams where the two axes represent the two different
variables.
What is multivariate data? - 🧠 ANSWER ✔✔Data that is made up of more
than 2 variables e.g. comparing height, weight, age and shoe size together.
What does grouping data mean? - 🧠 ANSWER ✔✔Grouping data using
tables makes it easier to spot patterns in the data and quickly see how the
data is distributed.
What are the pros of grouping data? - 🧠 ANSWER ✔✔Makes the data easy
to read and understand, easy to spot patterns and compare data.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
,What are the cons of grouping data? - 🧠 ANSWER ✔✔Loses accuracy of
data as you no longer know exact data values. Calculations made from
these will only be an estimate e.g. mean.
What is primary data? - 🧠 ANSWER ✔✔Data that you have collected
yourself, or someone has collected on your behalf.
What is secondary data? - 🧠 ANSWER ✔✔Data that has already been
collected.
What is a population in the context of an investigation? - 🧠 ANSWER
✔✔Everyone or everything that could be involved in the investigation.
What is a census? - 🧠 ANSWER ✔✔A survey of the entire population.
What is a sample? - 🧠 ANSWER ✔✔A smaller number from the population
that you actually survey. The data obtained from the sample is then used to
make conclusions about the whole population.
What is a sampling frame? - 🧠 ANSWER ✔✔A list of all the members of the
population. This is where you will choose the sample from.
What is a sampling unit? - 🧠 ANSWER ✔✔The people that are to be
sampled e.g. students in a school.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
, What is a biased sample? - 🧠 ANSWER ✔✔A sample that does not
represent the population fairly. Example, if surveying students at a mixed
school and the sample only contains girls.
What is a random sample? - 🧠 ANSWER ✔✔A sample where every
item/person in the population has an equal chance of being selected.
What are some random sampling techniques? - 🧠 ANSWER ✔✔Pick
numbers/names out of a hat, using a random number table, using the
random number generator function on a calculator or computer.
What are the advantages of random sampling? - 🧠 ANSWER ✔✔Sample is
representative as every member of the population has an equal chance of
being selected. It's unbiased.
What are the disadvantages of random sampling? - 🧠 ANSWER ✔✔Need a
full list of population (not always easily obtainable), not always convenient
as it can be expensive and time consuming, needs a large sample size.
What is a stratified sample? - 🧠 ANSWER ✔✔A sample where the size of
each strata (group) in the sample is in proportion to the sizes of strata in
the population.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
Exam Questions and Verified Answers |
Already Graded A+
What is raw data? - 🧠 ANSWER ✔✔Unprocessed data that has just been
collected and needs to be ordered, grouped, rounded, cleaned.
What is qualitative data? - 🧠 ANSWER ✔✔Non-numerical, descriptive data
such as eye/hair colour or gender. Often subjective so usually more difficult
to analyse.
What is quantitative data? - 🧠 ANSWER ✔✔Numerical data that can be
measured with numbers. Easier to analyse than qualitative data. Example,
height, weights, marks in an exam etc.
What is discrete data? - 🧠 ANSWER ✔✔Data that only takes particular
values (not necessarily whole numbers) such as shoe size or number of
people.
What is continuous data? - 🧠 ANSWER ✔✔Data that can take any value
e.g. height, weight.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,What is categorical data? - 🧠 ANSWER ✔✔Data that can be sorted into
non-overlapping categories such as gender. Used for qualitative data so
that it can be more easily processed.
What is ordinal data? - 🧠 ANSWER ✔✔Quantitative data that can be given
an order or ranked on a rating scale, e.g. marks in an exam.
What is bivariate data? - 🧠 ANSWER ✔✔Data that involves measuring 2
variables. Can be qualitative or quantitative, grouped or ungrouped. Usually
used with scatter diagrams where the two axes represent the two different
variables.
What is multivariate data? - 🧠 ANSWER ✔✔Data that is made up of more
than 2 variables e.g. comparing height, weight, age and shoe size together.
What does grouping data mean? - 🧠 ANSWER ✔✔Grouping data using
tables makes it easier to spot patterns in the data and quickly see how the
data is distributed.
What are the pros of grouping data? - 🧠 ANSWER ✔✔Makes the data easy
to read and understand, easy to spot patterns and compare data.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
,What are the cons of grouping data? - 🧠 ANSWER ✔✔Loses accuracy of
data as you no longer know exact data values. Calculations made from
these will only be an estimate e.g. mean.
What is primary data? - 🧠 ANSWER ✔✔Data that you have collected
yourself, or someone has collected on your behalf.
What is secondary data? - 🧠 ANSWER ✔✔Data that has already been
collected.
What is a population in the context of an investigation? - 🧠 ANSWER
✔✔Everyone or everything that could be involved in the investigation.
What is a census? - 🧠 ANSWER ✔✔A survey of the entire population.
What is a sample? - 🧠 ANSWER ✔✔A smaller number from the population
that you actually survey. The data obtained from the sample is then used to
make conclusions about the whole population.
What is a sampling frame? - 🧠 ANSWER ✔✔A list of all the members of the
population. This is where you will choose the sample from.
What is a sampling unit? - 🧠 ANSWER ✔✔The people that are to be
sampled e.g. students in a school.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
, What is a biased sample? - 🧠 ANSWER ✔✔A sample that does not
represent the population fairly. Example, if surveying students at a mixed
school and the sample only contains girls.
What is a random sample? - 🧠 ANSWER ✔✔A sample where every
item/person in the population has an equal chance of being selected.
What are some random sampling techniques? - 🧠 ANSWER ✔✔Pick
numbers/names out of a hat, using a random number table, using the
random number generator function on a calculator or computer.
What are the advantages of random sampling? - 🧠 ANSWER ✔✔Sample is
representative as every member of the population has an equal chance of
being selected. It's unbiased.
What are the disadvantages of random sampling? - 🧠 ANSWER ✔✔Need a
full list of population (not always easily obtainable), not always convenient
as it can be expensive and time consuming, needs a large sample size.
What is a stratified sample? - 🧠 ANSWER ✔✔A sample where the size of
each strata (group) in the sample is in proportion to the sizes of strata in
the population.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
4
STATEMENT. ALL RIGHTS RESERVED
