Practice Data Collection in Statistics

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

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Quick Recap

The systematic process of gathering information to answer questions, using methods like surveys, experiments, or observations.

Imagine you want to know your class's favorite ice cream flavor. You can't just guess - you need to actually ask everyone and write down their answers. That's data collection! It's like being a detective who gathers clues before solving a mystery.

Showing a random 20 of 50 problems.

Example 1

medium
A class of 40 is surveyed about transport. Half walk, a quarter bike, the rest take the bus. How many take the bus?

Example 2

challenge
A survey of 100 students reports 60 like math and 50 like science, with 25 liking both. How many like neither subject?

Example 3

medium
A survey gathers ages 10, 12, 11, 13, 14 from 5 students. What is the total of all collected ages?

Example 4

medium
A survey of 24 students records handedness: 18 right-handed, the rest left-handed. How many are left-handed?

Example 5

medium
A survey asks: 'Don't you agree pizza is the best lunch?' Is this a good survey question?

Example 6

easy
A student measures the length of 44 leaves. How many measurements were made?

Example 7

easy
A weather log records rain on 4 of 7 days. On how many days did it NOT rain?

Example 8

medium
A student surveys 2424 classmates about a new lunch menu. 1818 like it, 44 dislike it, 22 are unsure. What fraction like the new menu?

Example 9

easy
A teacher collects shoe sizes from 8 students. How many individuals contributed data?

Example 10

hard
A teacher wants the average reading speed of all 300300 students in the school but doesn't have time to test everyone. She tests 3030 randomly chosen students. What is this kind of data collection called?

Example 11

challenge
A study collects data on 3 days. Day 1 had 12 responses, each later day had 4 more than the day before. How many responses were collected over all 3 days?

Example 12

easy
To learn the class's favorite sport, a student asks all 25 classmates. How many people were surveyed?

Example 13

easy
A survey of pets gives: dog, cat, dog, fish, dog. How many distinct categories of pet appear?

Example 14

easy
A teacher asks 2020 students their favorite season. 77 say summer, 55 say winter, 44 say spring, the rest say fall. How many say fall?

Example 15

medium
A week-long log shows daily steps: 4500,5200,6100,4800,5500,7200,50004500, 5200, 6100, 4800, 5500, 7200, 5000. How many days had more than 50005000 steps?

Example 16

medium
In a 66-day temperature log, the high temperatures (°F) are 72,75,78,70,74,7972, 75, 78, 70, 74, 79. What is the range of the data?

Example 17

medium
A pet survey records: dog 7, cat 5, bird 3, fish 5. How many pets were recorded in total?

Example 18

easy
A tally chart shows: red |||| ||, blue |||, green ||||. How many people chose blue?

Example 19

medium
Two students each survey 15 people, but 5 people were asked by both. How many distinct people were surveyed in total?

Example 20

easy
A student measures the height of 5 plants. Each measurement is one data point. How many data points were collected?
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