Understanding Weighted Averages

Understanding Weighted Averages

Assessment

Interactive Video

Mathematics

6th - 8th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial explains the concept of weighted averages, demonstrating how they differ from regular averages by considering the number of items in each group. Through examples involving kids and a bodybuilder, and different car models, the tutorial illustrates how to calculate weighted averages using both direct numbers and percentages. It emphasizes that weighted averages can apply to various contexts beyond weights, such as income or volume, and shows the equivalence of different calculation methods.

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14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main focus of the video?

Calculating regular averages

Understanding weighted averages

Learning about bodybuilders

Discussing car weights

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example with kids and a bodybuilder, what is the regular average weight calculated?

200 pounds

300 pounds

133 pounds

100 pounds

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does the regular average not accurately represent the group in the example?

Because the weights are not evenly distributed

Because the bodybuilder is much heavier

Because the kids are all the same weight

Because there are more kids than bodybuilders

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the weighted average calculated in the example with kids and a bodybuilder?

By taking the lightest weight

By taking the heaviest weight

By multiplying each weight by the number of people with that weight and dividing by the total number of people

By adding all weights and dividing by the number of people

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the weighted average weight in the example with kids and a bodybuilder?

200 pounds

133 pounds

100 pounds

300 pounds

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example with four bodybuilders and one kid, what is the weighted average weight?

100 pounds

200 pounds

260 pounds

300 pounds

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the weighted average change when there are more bodybuilders than kids?

It remains the same

It becomes closer to the weight of the bodybuilders

It becomes the average of the two weights

It becomes closer to the weight of the kids

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