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U6S Review Day 1

Authored by Jonathan Barron

Mathematics

9th Grade

Used 3+ times

U6S Review Day 1
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10 questions

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1.

DRAG AND DROP QUESTION

3 mins • 1 pt

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How would you describe the correlation of the following scatterplot? (a)  

Strongly Positive
Weakly Positive
Weakly Negative
Strongly Negative
No Correlation
Unknown

Answer explanation

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Positive correlation= data points increase from left to right

Strong= data points close together (but not perfect)

2.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

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Data was collected on the number of siblings for students in one classroom. The results are shown on the table. Select two correct representations for the data below.

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Answer explanation

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The number 0 should be included

3.

DRAW QUESTION

3 mins • 1 pt

Data was collected on the number of siblings for students in one classroom. The results are shown on the table. Create a box-and-whisker plot for the data on a separate paper.

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Answer explanation

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Step 1: enter data in list

L = [ 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 4]

----- ----- ----- -----

Step 2: 5-number summary

stats (L)

----- ----- ----- -----

Step 3: Use step 2 results

Min = 0

Q1 = 1

Q2 (median) = 1

Q3 = 2

Max = 4

----- ----- ----- -----

Non-Desmos strategy:

Ask me how to solve this without Desmos if you feel you might take the exam without a laptop

4.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

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Data was collected for purchases of food and beverages by fans visiting a home soccer game at Banneker.

----- ----- ----- -----

What is the marginal frequency of people who bought no food?

Answer explanation

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Only joint frequencies are shown

----- ----- ----- -----

The marginal frequencies are found by adding all numbers in the "no food" row

----- ----- ----- -----

60 = 30 + 20 + 10

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

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Data was collected for purchases of food and beverages by fans visiting a home soccer game at Banneker.

----- ----- ----- -----

Use the data from the survey to determine which of the following statements is true about people who bought no food.

They were 10% more likely to buy soda than water

They were 17% more likely to buy soda than water

Not enough information to determine

Answer explanation

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How many bought no food?

60 = 30 + 20 + 10

----- ----- ----- -----

Of the no food group, what percent bought soda? Water?

30 ÷ 60 = 0.50 = 50% soda

20 ÷ 60 = 0.33 = 33% water

----- ----- ----- -----

Of the no food group, find difference in percent that bought soda vs. water:

50% - 33% = 17%

----- ----- ----- -----

Those who bought no food were 17% more likely to buy soda than water

6.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

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What is the difference in Q1 values for Team A and Team B?

Answer explanation

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The anchor chart in the room labels Q1 for you

----- ----- ----- -----

Q1 for Team A is 45

Q1 for Team B is 50

Difference = 50 - 45 = 5

7.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

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What is the difference in Q3 values for the Mall and Online box-and-whisker plots?

Answer explanation

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The anchor chart in the room labels Q3 for you

----- ----- ----- -----

Q3 for Mall is 100

Q3 for Online is 60

Difference = 100 - 60 = 40

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