Abbreviation for Standard Deviation: Definition & Meaning

Abbreviation for Standard Deviation

• SD

How to Pronounce Standard Deviation

To say “standard deviation” out loud, you can break it into three parts: “stan-dard de-vi-a-tion.”

What Does Standard Deviation Mean?

Standard deviation is a measure of how spread out numbers are in a set. It tells you how much the numbers in a data set differ from the average (mean) of the set.

Other Examples

• A low standard deviation indicates that the values tend to be close to the mean of the set, while a high standard deviation indicates that the values are spread out over a wider range. — Wikipedia

Synonyms for Standard Deviation

Other words or phrases that mean something similar to standard deviation include:

• Variability
• Spread
• Dispersion

The History of the Word

The term “standard deviation” has been around for quite some time. It was first introduced by the mathematician Karl Pearson in the late 19th century.

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1 / 20

What is a simile?

A) A comparison using "like" or "as".

B) A direct comparison without using "like" or "as".

C) An exaggerated statement.

D) A figure of speech that gives human qualities to non-human things.

2 / 20

Identify the simile in the following sentence: “She swims like a fish.”

A) She swims

B) like a fish

C) swims like

D) a fish

3 / 20

What is a metaphor?

A) A comparison that uses "like" or "as".

B) A direct comparison that does not use "like" or "as".

C) An expression that means something other than the literal meanings of its words.

D) A word that sounds like its meaning.

4 / 20

Which of the following is a metaphor?

A) He is as brave as a lion.

B) Her tears were a river flowing down her cheeks.

C) She runs like the wind.

D) He barked orders at his team.

5 / 20

What is an idiom?

A) A literal expression.

B) A comparison using "like" or "as".

C) A group of words established by usage as having a meaning not deducible from those of the individual words.

D) A direct comparison without using "like" or "as".

6 / 20

What does the idiom “break the ice” mean?

A) To literally break ice.

B) To start a conversation in a social setting.

C) To cool down a situation.

D) To freeze something quickly.

7 / 20

What is an adjective?

A) A word that describes or modifies a noun.

B) A word that shows action.

C) A word that replaces a noun.

D) A word that connects words together.

8 / 20

Choose the adjective in the following sentence: “The quick brown fox jumps over the lazy dog.”

A) quick, brown

B) jumps

C) over

D) dog

9 / 20

What is an abbreviation?

A) A shortened form of a word or phrase.

B) A long form of a word.

C) A word used to describe another word.

D) A word used in place of a noun.

10 / 20

What does the abbreviation “e.g.” stand for?

A) End game

B) Exempli gratia (for example)

C) Ergo (therefore)

Estimated guess

11 / 20

What is a verb?

A) A word that describes a noun.

B) A word that indicates action, occurrence, or existence.

C) A word that connects two parts of a sentence.

D) A word that modifies a verb.

12 / 20

Identify the verb in the following sentence: “The cat sleeps on the sofa.”

A) The

B) cat

C) sleeps

D) sofa

13 / 20

“Out of the frying pan into the fire” is an example of:

A) A simile.

B) A metaphor.

C) An idiom.

D) An adjective.

14 / 20

Which of the following is an adjective?

A) Quickly

B) Beautiful

C) Run

D) Under

15 / 20

The abbreviation “NASA” stands for:

A) National Aeronautics and Space Administration

B) North American Space Agency

C) National Association of Space Astronauts

D) None of the above

16 / 20

Choose the metaphor in the following sentence: “Time is a thief.”

A) Time

B) is

C) a thief

D) None of the above

17 / 20

What does the idiom “hit the books” mean?

A) To physically hit books.

B) To start studying.

C) To write a book.

D) To organize books on a shelf.

18 / 20

Which of the following sentences contains a simile?

A) He is a shining star.

B) She danced like there was no tomorrow.

C) Life is a rollercoaster.

D) They moved mountains to be together.

19 / 20

“LOL” is an abbreviation for:

A) Lots Of Love

B) Little Old Lady

C) Long Overdue Library-book

D) Laugh Out Loud

20 / 20

Identify the verb in this sentence: “They whispered secrets into the night.”

A) They

B) secrets

C) whispered

D) night

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When to Use the Abbreviation

You can use the abbreviation SD whenever you’re writing about or discussing standard deviation in a more casual or informal setting.

In more formal contexts, it’s often better to use the full term.

Example of the Word and Abbreviation in Context

Let’s say you have a class of students, and you want to know how much their test scores vary from the average score.

You could calculate the standard deviation (SD) to get a sense of the spread of scores.