One-Variable Data Review

How do you find MEAN?

• Add up all the numbers and divide by how many numbers there are

• Put numbers in order from least to greatest and find the one in the middle

• Find the number that shows up the most number of times

• Subtract the smallest value from the biggest value

Answer explanation

Finding the MEAN takes the most work, and you might think your teacher is MEAN for making you type so much into a calculator. But your teacher really just MEANS well!

Tags

CCSS.6.SP.B.5C

How do you find RANGE?

• Add up all the numbers and divide by how many numbers there are

• Put numbers in order from least to greatest and find the one in the middle

• Find the number that shows up the most number of times

• Subtract the smallest value from the biggest value

Answer explanation

Think about the wild west and how cowboys ride horses out on the RANGE. They have to climb from the lowest canyons to the highest mountains. In other words, RANGE is how far it is from the lowest (minimum) to the highest (maximum).

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

How do you find MEDIAN?

• Add up all the numbers and divide by how many numbers there are

• Put numbers in order from least to greatest and find the one in the middle

• Find the number that shows up the most number of times

• Subtract the smallest value from the biggest value

Answer explanation

MEDIAN sort of sounds like Medium. If you're ordering food, they might ask you what size you'd like - small, medium, or large. Size medium is in the MIDDLE, so MEDIAN is the number in the MIDDLE!

Tags

CCSS.6.SP.B.5C

How do you find MODE?

• Add up all the numbers and divide by how many numbers there are

• Put numbers in order from least to greatest and find the one in the middle

• Find the number that shows up the most number of times

• Subtract the smallest value from the biggest value

Answer explanation

MODE sounds like MOST, so the MODE is the number that shows up the MOST! Remember, it is possible to have more than one of these!

Tags

CCSS.6.SP.B.5C

To find QUARTILE 1, you need to...

• Find the Middle of the Bottom Half of the Data

• Find the Middle of the Upper Half of the Data

• Add all Numbers in the Upper Half of the Data and Divide by How Many Numbers there are

• Add all Numbers in the Bottom Half of the Data and Divide by How Many Numbers there are

Tags

CCSS.6.SP.B.5C

To find QUARTILE 3, you need to...

• Find the Middle of the Bottom Half of the Data

• Find the Middle of the Upper Half of the Data

• Add all Numbers in the Upper Half of the Data and Divide by How Many Numbers there are

• Add all Numbers in the Bottom Half of the Data and Divide by How Many Numbers there are

Tags

CCSS.6.SP.B.5C

If a data set HAS AN OUTLIER, the best measure of center is the...

• Mean

• Median

• Mode

• Range

Answer explanation

Remember, an outlier has a big effect on the mean, making it unreliable. So if there's an OUTLIER, your best bet is to go with the MEDIAN!

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

If a data set DOES NOT HAVE AN OUTLIER, the best measure of center is the...

• Mean

• Median

• Mode

• Range

Answer explanation

I couldn't find any good pictures for this one, so here's a cute puppy!

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

NUMERICAL (or quantitative) responses are answers that are...

• Numbers

• Words

Answer explanation

NUMERICAL comes from the word NUMBER!

CATEGORICAL (or qualitative) responses are answers that are...

• Numbers

• Words

Answer explanation

If you sort something into CATEGORIES, you are looking at groups that are WORDS.