How do I estimate the standard deviation without any calculations?

Statistics
Tutor: None Selected Time limit: 1 Day

Sep 30th, 2015

Thank you for the opportunity to help you with your question!

Notice how the data is close to the shape of a normal curve? We see the mean in this example is 160 because it falls right in the middle of the curve at the highest peak. We then see the position of the first standard deviation to the right and left of the mean represented by 180 and 140 respectively.

The value of the standard deviation is the difference between the mean and it's first standard deviation position on the normal curve, which in this case is 180 - 160 = 20.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 30th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Sep 30th, 2015
...
Sep 30th, 2015
Dec 9th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer