What does the standard deviation tell us about the data set?

How much each number in the data set increases by

How much each number in the data set decreases by

Which example shows CAUSATION ? (Which one CAUSED the other to happen.)

It started raining and the baseball game was delayed.

Rainfall and time spent reading.

Eating more butter and increased divorce rates.

Which example shows CORRELATION ? (The events show correlation, but one thing does NOT cause the other thing to happen.)

Temperature and the amount of people at the beach.

I put water in the freezer and now I have ice.

The alarm clock went off and I woke up.

Data is analyzed comparing hours studied and grades. It is determined that the correlation coefficient is 0.92. What does this mean?

There is a strong positive correlation between studying and grades.

There is a strong negative correlation between studying and grades.

There is a weak positive correlation between studying and grades.

There is a weak negative correlation between studying and grades.

A restaurant sells pizza for the prices in the data table. Calculate the linear regression equation of the data. Use the DeltaMath Stat Calculator or the Desmos Linear Regression Calculator

y = 1.5 x + 12 y=1.5x+12 y = 1 . 5 x + 1 2

y = 12 x + 1.5 y=12x+1.5 y = 1 2 x + 1 . 5

y = 0.67 x − 8 y=0.67x-8 y = 0 . 6 7 x − 8

y = − 8 x + 0.67 y=-8x+0.67 y = − 8 x + 0 . 6 7

The linear regression equation is y = 61.93 x − 1.79 y=61.93x-1.79 y = 6 1 . 9 3 x − 1 . 7 9 . According to the model, the slope can be interpreted as:

They drove at a speed of 61.93 miles per hour.

After 0 hours of driving, they went 61.93 miles.

Data was collected on the weight of a male laboratory rat for the first 25 weeks after its birth. The linear regression equation is y = 40 x + 100 y=40x+100 y = 4 0 x + 1 0 0 , where x is number of weeks and y is weight in grams. What does the y-intercept mean in context of the problem?

The predicted weight of the rat at birth.

The predicted weight of the rat in year 0.

The average increase in the rat's weight.

Statistics & Data Review

Authored by Lauren Richardson

Mathematics

9th Grade

CCSS covered

Used 7+ times

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40 questions

Show all answers

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What does the "mean" represent?

average

middle

repeats the most

variation

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What does "mode" mean?

average

middle

repeats the most

variation

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a the meaning for "median"?

fair share

middle

repeats the most

variation

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How do you find the range?

order least to greatest, then slash from each side until you reach the middle

add the numbers in your data set, then divide by the amount you added

look for the number that repeats the most

highest number minus the lowest number

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.3

CCSS.6.NS.C.7

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the median?

Tags

CCSS.6.SP.B.5C

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the range of the set of data?

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A data set can have more than one mode

True

False

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.3

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Statistics & Data Review

What does the "mean" represent?

What does "mode" mean?

What is a the meaning for "median"?

How do you find the range?

What is the median?

What is the range of the set of data?

A data set can have more than one mode

A bar graph used to display data grouped into intervals.

If centennial high school is the whole, our Algebra class would be considered a ...

Which measure of central tendency would best represent this data?

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