How is this the harder example? This is the easiest one in all of the questions.

They probably mean it's harder by how the question is worded.

what are center, spread and shape of distributions,?

Center is exactly what the name implies, it's the middle or average value of a data set. Mean and median are the two best measures of center. You should use mean when there aren't any outliers, extremely high or low values, as mean can be affected by outliers, changing the mean that you get. Median should be used when there aren't any outliers, as median doesn't change by a large amount. Spread is the size of a data set. Interquartile Range(IQR) and Standard Deviation are the two best measures of center. IQR can be used when there are no outliers and it can be found by subtracting Quartile 3 and Quartile 1, which are two values in a boxplot. Standard Deviation is hard for me to explain but it's easy enough to look up. Sorry about that. You should only use standard deviation if there aren't any outliers. Hope that helped! :)

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Course: Digital SAT Math > Unit 11

Lesson 4: Center, spread, and shape of distributions: advanced

Center, spread, and shape of distributions — Harder example

Name: Center, spread, and shape of distributions — Harder example
Uploaded: 2015-04-23T21:02:22Z
Description: Watch Sal work through a harder Center, spread, and shape of distributions problem.

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Watch Sal work through a harder Center, spread, and shape of distributions problem.

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sambhav shrestha
Posted 7 years ago. Direct link to sambhav shrestha's post “How is this the harder ex...”
How is this the harder example? This is the easiest one in all of the questions.
Button navigates to signup pageComment on sambhav shrestha's post “How is this the harder ex...”
(134 votes)
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- Br Paul
  Posted 4 years ago. Direct link to Br Paul's post “They probably mean it's h...”
  They probably mean it's harder by how the question is worded.
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  (37 votes)
Naveed
Posted 9 months ago. Direct link to Naveed's post “Bruh basic example was a ...”
Bruh basic example was a lot harder than the hard example
Button navigates to signup pageComment on Naveed's post “Bruh basic example was a ...”
(53 votes)
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Murad
Posted 7 years ago. Direct link to Murad's post “what are center, spread a...”
what are center, spread and shape of distributions,?
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(6 votes)
Answer
- Abin Santy
  Posted 7 years ago. Direct link to Abin Santy's post “Center is exactly what th...”
  Center is exactly what the name implies, it's the middle or average value of a data set. Mean and median are the two best measures of center. You should use mean when there aren't any outliers, extremely high or low values, as mean can be affected by outliers, changing the mean that you get. Median should be used when there aren't any outliers, as median doesn't change by a large amount.
  
  Spread is the size of a data set. Interquartile Range(IQR) and Standard Deviation are the two best measures of center. IQR can be used when there are no outliers and it can be found by subtracting Quartile 3 and Quartile 1, which are two values in a boxplot. Standard Deviation is hard for me to explain but it's easy enough to look up. Sorry about that. You should only use standard deviation if there aren't any outliers.
  
  Hope that helped! :)
  Comment on Abin Santy's post “Center is exactly what th...”
  (24 votes)
suhanashivpurkar
Posted a year ago. Direct link to suhanashivpurkar's post “a week left for sat and i...”
a week left for sat and im still grinding myself here
Button navigates to signup pageComment on suhanashivpurkar's post “a week left for sat and i...”
(17 votes)
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aminulislamsami1
Posted 9 months ago. Direct link to aminulislamsami1's post “looks like SAL by mistake...”
looks like SAL by mistake replaced the videos by each other
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(16 votes)
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sjeremiah2003
Posted 4 years ago. Direct link to sjeremiah2003's post “Just a heads up to avoid ...”
Just a heads up to avoid confusion... The 18 he wrote should have been an 8. He accidentally added a 1 and then forgot to take it out
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(13 votes)
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- Hassan Suriya
  Posted 4 years ago. Direct link to Hassan Suriya's post “Yes sjeremiah2003, this i...”
  Yes sjeremiah2003, this is the mistake. It should be 8 instead of 18. We can ignore this mistake.
  Comment on Hassan Suriya's post “Yes sjeremiah2003, this i...”
  (1 vote)
samarthcapable7
Posted 4 years ago. Direct link to samarthcapable7's post “I hope all questions in t...”
I hope all questions in the sat are like this. I will get a perfect score
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(13 votes)
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eliana9243
Posted 8 years ago. Direct link to eliana9243's post “the easiest way to do thi...”
the easiest way to do this is just add the lowest number in the series with the range and you will get x because lowest no-highest no=range
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(9 votes)
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Đỗ Minh Hùng
Posted 8 months ago. Direct link to Đỗ Minh Hùng's post “the bar questions are way...”
the bar questions are way harder than this xD
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(8 votes)
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jeremiahf1998
Posted 8 years ago. Direct link to jeremiahf1998's post “the easiest way to do thi...”
the easiest way to do this is just add the lowest number in the series with the range and you will get x because lowest no-highest no=range
Button navigates to signup pageComment on jeremiahf1998's post “the easiest way to do thi...”
(5 votes)
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Video transcript

- [Instructor] We're told a store has five different lengths of extension cords for sale as shown in the table above or to the left. If the range of lengths of the five cords is seven feet, what is the greatest possible value of x? Pause this video, and try to figure that out. Well, let's just remind ourselves what the range is. The range is going to be equal to your high value minus your low value. And we want to maximize, we want to figure out the greatest possible value of x. So let's just assume that our high value here is x. And then what's going to be our low value? Well, our low value is this six feet right over here. And then we know that the range is seven feet. And so we get seven is equal to x minus six. You could add six to both sides, and you would get that x is equal to 13. That's the greatest possible value of x.