Grade 7 Topic 6 - Statistics

7TH GRADE CORE

TOPIC 6

CAL Topics.docx

LESSON6-1

MAKE AND INTERPRET

CIRCLE GRAPHS

BELLRINGER

LESSON6-1

MAKE AND INTERPRET CIRCLE GRAPHS

KEY CONCEPT, DO YOU UNDERSTAND? DO YOU
KNOW HOW?(SELECTED QUESTIONS)

PRACTICE AND PROBLEM SOLVING

EXIT TICKET

LESSON 6-2

USE PROPORTIONS TO MAKE

PREDICTIONS FROM DATA

BELLRINGER

LESSON 6-2

USE PROPORTIONS TO MAKE PREDICTIONS FROM DATA

Most data about populations come from sampling the population, then making predictions based on that sample.

Proportions are an easy way to make this prediction.

Math Response

What fraction compares the number of yes signs to the total number of signs?

Type answer here

Correct Answer: \frac{5}{10}

Deg^°

Rad

Math Response

To solve the proportion, multiply the known fraction by the new total.

Type answer here

Correct Answer: 1234

Deg^°

Rad

Labeling

Example 1 Try It

Drag labels to their correct position on the image

population

sample

Math Response

a) What's the fraction that represents the known relationship?

Type answer here

Correct Answer: \frac{165}{250}

Deg^°

Rad

Math Response

3a) Solve the proportion

Type answer here

Correct Answer: 36300

Deg^°

Rad

Math Response

Example 3 Try It Response

Type answer here

Correct Answer: 18700

Deg^°

Rad

Math Response

Example 4: What fraction represents the known relationship

Type answer here

Correct Answer: \frac{16}{20}

Deg^°

Rad

Math Response

Solve the proportion

Type answer here

Correct Answer: 232

Deg^°

Rad

Math Response

Example 4 Try It

Type answer here

Correct Answer: 279

Deg^°

Rad

Math Response

What fraction represent the known relationship for Company A?

Type answer here

Correct Answer: \frac{75}{11500}

Deg^°

Rad

Math Response

What is the prediction for the number of defective batteries from Company A?

Type answer here

Correct Answer: 98

Deg^°

Rad

Math Response

What fraction represent the known relationship for Company B?

Type answer here

Correct Answer: \frac{90}{12225}

Deg^°

Rad

Math Response

What is the prediction for the number of defective batteries from Company B?

Type answer here

Correct Answer: 110

Deg^°

Rad

Math Response

Example 5 Try It

What fraction represents the known relationship for Company C?

Type answer here

Correct Answer: \frac{60}{10800}

Deg^°

Rad

Math Response

Example 5 Try It

How many defective batteries will Company C produce?

Type answer here

Correct Answer: 83

Deg^°

Rad

KEY CONCEPT, DO YOU UNDERSTAND? DO YOU
KNOW HOW?(SELECTED QUESTIONS)

PRACTICE AND PROBLEM SOLVING

EXIT TICKET

IXL 7-L.13 Estimate population size using proportions

Math Response

What fraction represents the known relationship? Remember to use what you care about as the numerator.

Type answer here

Correct Answer: \frac{320}{20}

Deg^°

Rad

Math Response

Multiply the known relationship by the quantity related to the unknown to solve the proportion!

Type answer here

Correct Answer: 9600

Deg^°

Rad

Math Response

What fraction represents the known relationship? Remember to put what you care about first.

Type answer here

Correct Answer: \frac{994}{17}

Deg^°

Rad

Math Response

Multiply the known fraction by the quantity related to the unknown to solve the proportion.

Type answer here

Correct Answer: 4970

Deg^°

Rad

Math Response

What fraction represents the known relationship? Remember to put what you care about first.

Type answer here

Correct Answer: \frac{972}{54}

Deg^°

Rad

Math Response

Multiply the known fraction by the quantity related to the unknown to solve the proportion.

Type answer here

Correct Answer: 1422

Deg^°

Rad

IXL 7-L.13 Estimate population size using proportions

LESSON 6-3

COMPARE MEASURES

OF CENTER AND

VARIABILITY

BELLRINGER

LESSON 6-3

COMPARE MEASURES OF CENTER AND VARIABILITY

MID-TOPIC CHECK POINT

PRACTICE AND PROBLEM SOLVING

EXIT TICKET

LESSON 6-4

INTERPRET MEASURES OF
CENTER AND VARIABILITY

BELLRINGER

LESSON 6-4

INTERPRET MEASURES OF CENTER AND VARIABILITY

Multiple Choice

The typical daily revenue should is a measure of center. Which is the most appropriate measure of center?

• mean

• median

• range

• interquartile range

Math Response

To read the stem and leaf plot, use the stem (number on the left) as the tens place, and each number on the right as a ones place to make new numbers. How many numbers are there in the data set?

Type answer here

Correct Answer: 14

Deg^°

Rad

Math Response

To read the stem and leaf plot, use the stem (number on the left) as the tens place, and each number on the right as a ones place to make new numbers. What is the smallest number in the data set?

Type answer here

Correct Answer: 1200

Deg^°

Rad

Math Response

To read the stem and leaf plot, use the stem (number on the left) as the tens place, and each number on the right as a ones place to make new numbers. What is the largest number in the data set?

Type answer here

Correct Answer: 4800

Deg^°

Rad

Multiple Choice

$7100 is an outlier compared to the rest of the quantities. Which measure of center should be used?

• mean

• median

• range

• interquartile range

KEY CONCEPT, DO YOU UNDERSTAND? DO
YOU KNOW HOW?(SELECTED QUESTIONS)

PRACTICE AND PROBLEM SOLVING

EXIT TICKET

LESSON 6-5

DRAW CONCLUSIONS FROM

DATA

BELLRINGER

LESSON 6-5

DRAW CONCLUSIONS FROM DATA

Multiple Choice

Example 1 Try It!

• Last Year

• This Year

KEY CONCEPT, DO YOU UNDERSTAND? DO
YOU KNOW HOW?(SELECTED QUESTIONS)

PRACTICE AND PROBLEM SOLVING

EXIT TICKET

LESSON 6-6

CHOOSE AN APPROPRIATE

GRAPHICAL REPRESENTATION

OF DATA

BELLRINGER

LESSON 6-6

CHOOSE AN APPROPRIATE GRAPHICAL REPRESENTATION OF

DATA

KEY CONCEPT, DO YOU UNDERSTAND? DO
YOU KNOW HOW?(SELECTED QUESTIONS)

PRACTICE AND PROBLEM SOLVING

EXIT TICKET

Display numerical data. Good for organizing different amounts and identifying outliers.

Ex. Which numerical response occurs the most? Are there outliers?

​Line Plot

Comparison of two or more categories to each other.

Ex. Which has a higher total?

Bar graph

Compare two data sets over multiple categories.

Ex. Which has more in each situation?

Double Bar graph

Show the shape of the distribution as well as the individual data points. Allows further calculations if needed.

Ex. What is the approximate average?

Stem and Leaf Plot

Compares shapes and ranges for a data set.

Ex. How many fit in a certain range? About where is the average? Are there outliers?

Histogram

Comparison of percents, fractions, proportions, or parts to the whole.

Ex. Which takes up more of the total? Which is most popular/common?

Circle graph

Values that change over time. Good for recognizing trends.

Ex. How fast is each group changing?

Line graph

Displaying median, IQR, and range. Great for comparing variability.

Ex. Which has a lower/higher median or variability?

Box plot

Dropdown

Which is the best type of graph?



Compare two data sets over multiple categories.



Ex. Which has more in each situation?

Select answer

Dropdown

Which is the best type of graph?



Displaying median, IQR, and range. Great for comparing variability.



Ex. Which has a lower/higher median or variability?

Select answer

Dropdown

Which is the best type of graph?



Comparison of percents, fractions, proportions, or parts to the whole.



Ex. Which takes up more of the total? Which is most popular/common?

Select answer

Dropdown

Which is the best type of graph?



Values that change over time. Good for recognizing trends.



Ex. How fast is each group changing?

Select answer

Dropdown

Which is the best type of graph?



Show the shape of the distribution as well as the individual data points. Allows further calculations if needed.



Ex. What is the approximate average?

Select answer

Dropdown

Which is the best type of graph?



Compares shapes and ranges for a data set.



Ex. How many fit in a certain range? About where is the average? Are there outliers?

Select answer

Dropdown

Which is the best type of graph?



Display numerical data. Good for organizing different amounts and identifying outliers.



Ex. Which numerical response occurs the most? Are there outliers?



​

Select answer

Dropdown

Which is the best type of graph?



Comparison of two or more categories to each other.



Ex. Which has a higher total?

Select answer