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Data Science Foundations for Students

Data Science

An introduction to data collection, representation, and interpretation concepts tailored for early learners.

data graphs statistics

12 Questions Hard Ages 5+ Aug 15, 2026

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About this Study Set

This study set covers Data Science through 12 practice questions. An introduction to data collection, representation, and interpretation concepts tailored for early learners. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 12 questions from the Data Science Foundations for Students study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which type of graph is best used to show how a whole amount is divided into different parts?

A Bar graph
B Pie chart
C Line graph
D Scatter plot

2 In a set of numbers, what is the 'range'?

A The middle number
B The most frequent number
C The difference between the highest and lowest values
D The sum of all numbers

3 If you flip a fair coin 100 times, what does 'probability' tell us about the outcome?

A It will land on heads exactly 50 times
B It is equally likely to land on heads or tails for each flip
C It will always land on tails more often
D The outcome depends on the person flipping

4 What is the term for a piece of information collected through observation or measurement?

A Data
B Guess
C Theory
D Opinion

5 Which of these is considered a 'categorical' variable?

A Height in centimeters
B Number of siblings
C Favorite primary color
D Temperature in degrees

6 What is the 'mode' of a data set?

A The largest value
B The value that appears most often
C The average value
D The smallest value

7 What does a 'Line Graph' typically show that a 'Bar Graph' does not emphasize?

A Comparisons between separate groups
B Total counts of items
C Changes or trends over a period of time
D The exact size of each category

8 When collecting data, what is a 'sample'?

A The entire population being studied
B A small subset of the population used to represent the whole
C The final report written at the end
D The set of questions asked

9 What does a 'Pictograph' use to represent data?

A Mathematical symbols
B Lines and curves
C Pictures or icons
D Shaded areas of a map

10 In a list of test scores, what is the 'median'?

A The middle value when the scores are ordered
B The highest score achieved
C The sum of all scores divided by the number of tests
D The score that occurs most frequently

11 If a bar graph's bars are not touching, what does this usually indicate about the data?

A The data is continuous
B The data is grouped into distinct categories
C The data is missing
D The data is increasing

12 Why do scientists use a 'tally chart'?

A To measure temperature
B To count the frequency of occurrences as they happen
C To show the location of cities
D To predict the future

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