All or Small
Represent!
Dot Plots
Inferences
One Steps or Nah?
Writing the Parts
100
A Health Club manager wants to know whether the members prefer a new sauna or steam room. The club surveys 50 of its 600 members. What is the population of this survey?
Who are the 600 members?
100
Sheila wants to research the colors of houses on a street. Which of the following methods could she use to generate a representative sample?
1. Assign each house a number and use a random number generator to create a list.
2. Choose every house that has 3 trees in the front.
3. Choose houses of people she knows.
4. Choose the houses that have shutters
5. List the houses on slips of paper and choose 20% of them out of a hat.
What is answers 1 and 5?
100
The dot plot shows the number of movies a group of students watched in the lasts 3 months. How many students were surveyed?
What is 20 students?
100
What inference can we make about this dot plot and the data? (Remember an inference is an educated guess or conclusion based on the data.)
Can we infer that most students saw between 1 to 3 movies?
100
Solve for x:
x + 2 = 3
What is x = 2?
100
How can I write 5 rows of corn if c = a row of corn.
What is 5c?
200
Jerry wants to find out which restaurant people think has the best fried chicken in town. What is the population from which Jerry should find a sample?
What is the town?
200
A national survey asks middle school students how many hours a day they spend doing homework. Which of the following best represents the population?
1. A group of 941 students in 8th grade in one town.
2. A group of 886 students in 6th grade in a certain county.
3. A group of 795 students in 7th grade in different states.
4. A group of 739 students in different middle school grades from multiple states.
What is answer number 4?
200
Which dot plot has greater variability? A or B
A. 
B. 
What is Plot B?
Plot A has a range of 6 and Plot B has a range of 8.
200
Which inference is most likely correct about the fish in these two lakes?
A. There is about the same variation in weight between small and large fish in both lakes.
B. There is less variation in weight between small and large fish in South Lake than Round Lake.
C. There is less variation in weight between small and large fish in Round Lake than in South Lake.
What is answer C?
200
How do you solve for x in this equation?
X/5 - 4 = 10
What is multiply by 5 then add 4?
200
How do I express that 5 rows of flowers (f) is added to 100 flower plants?
What is 5f + 100?
300
There are 652 passengers on a cruise ship, and 30 attended the magic show on board. What is the sample? What is the population?
What are 30 people attending the magic show?
What are the 652 passengers?
300
AACPS aims to understand the average screen time oA gf middle school students. Which of the following best represents the population?
A group of 923 students in 8th grade from one school.
A group of 865 students in 6th grade from one feeder cluster
A group of 810 students in 7th grade from all over the county.
A group of 754 students in different middle school grades from multiple regions.
What is answer 4?
300
Complete this sentence.
Dot Plot A has ___________ variability than Plot B.
Greater, Lesser or The Same
A
B.
What is Greater?
300
The dot plot shows quiz scores. The maximum score is 10. What inference or conclusion can you draw about the data?
What is that most of the students got 6 points?
300
Solve for X.
X - (-6) = 12
X = 6
300
How can I express these words when I'm writing an equation?
The total of all the students is 450?
What is = 450?
400
An English teacher wants to determine if the students would prefer to attend a writing convention or tour a local newspaper press. There are 120 students in 4 classes. Define a representative sample.
Draw 5 students' names from each class out of a hat?
Spin a wheel of names or student ids and pick 10?
Choose every 5th person that comes in the door and give them a survey?
400
Which methods do you think are appropriate for generating a representative sample?
Juan wants to research the types of cars parked on a particular street. Which of the following methods could he use to generate a representative sample? Choose all that apply.
Choose every car that is blue.
- Assign each car a number and use a random number generator to create a list.
List the cars on slips of paper and choose 30% of them out of a hat.
Choose cars owned by his friends.
Choose cars that have sunroofs.
What are questions 2 and 3?
400
Fill in the blank.
Last year's push ups had _____________variability compared to this year's push ups.
Greater, Less Than or The Same
What is The Same Variability?
400
What inference can you make about the number of students who are likely to wear gym shoes and those likely to wear boot as a ratio.
What is 19: 6 or 19/6?
400
Solve for X
1.5X = 15
What is X = 10?
400
If Claire bought 8 tickets for a total cost of $104. Let c = the cost of the ticket. How would you write this as an equation?
What is 8c = 104?
500
Jerry wants to find out what is the best fried chicken restaurant in town. He decides to go to his favorite and ask the customers there which restaurant they prefer? Is this a representative sample?
No. It might be biased because they probably like the restaurant they're at.
500
A supermarket wants to conduct a survey of its customers to find whether they enjoy oatmeal for breakfast. Describe how the supermarket could generate a representative sample for the survey.
They could survey every 5th person that comes in for one day.
They could send flyers home for customers to call and tally the results.
They could call the customers in their database after generating a random sample of 20 % .
500
True or False.
There is greater variability in the weights of fish in Round Lake.
What is False?
500
Sunil conducts a survey and obtains the results shown below. What inference can she make about the data?
What is that most of the spectators attend 1 or 2 games.
500
Solve for X:
4X + 2 = 18
What is X = 4?
500
A florist has a total of 120 flowers, that are red or yellow. He divided the flowers between his refrigerators. The yellow refrigerator has 30 flowers in each of 3 boxes, and there are 3 boxes of red flowers. If R = the red flowers, what equation can you write to represent the number of red and yellow flowers?
Yellow refrigerator has 3 boxes of 30 flowers = 90 flowers
(3)30 + 3R = 120