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Launch Day: What Can Samples Tell Us?

Use model rocket flight samples to estimate population results, make planning decisions, and investigate variation across repeated samples.

Grade 7MathInteractive · Printable

Aligned to7.SP.A.2

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What’s included

Single worksheet
Auto-graded online
1 Common Core standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 7
Subject: Math
Question types: Fill in the blank, Multiple choice, Matching, Short answer

About this worksheet

What students practice

Students use sample proportions and means to make inferences about a population of rocket flights.
Students compare repeated random samples to describe variation in population estimates.
Students explain why overlapping random samples do not necessarily include an entire population.

How to use

Use after introducing random sampling. Have students calculate estimates independently, then discuss how repeated samples strengthen evidence without guaranteeing exact results.

Curriculum

Common Core standard covered

7.SP.A.2

Use data from a random sample to make inferences about a population, and compare several samples to see how estimates vary.

Preview

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Launch Day: What Can Samples Tell Us?

Use random samples to estimate flight results and compare the evidence.

Read a Flight Sample

At a model rocket event, 144 rockets each complete one flight. After the event, analysts randomly select 8 flight records. Use this sample to make estimates, not exact claims.

Random Sample of Flight Records
Record	Time airborne (sec)
1	24
2	28
3	32
4	32
5	36
6	40
7	44
8	44

Use the sample mean to estimate the mean time airborne for all 144 flights.

Estimated population mean: seconds

A flight lasting at least 32 seconds produces a long tracking video. Based on the sample, about how many of the 144 flights produced long tracking videos?