Box-and-whisker Plot
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@luke75912345 it has a dislike now !
DizyVipr 4 days ago
@JoAnn4729 suck my dildo
DizyVipr 4 days ago
Follow me on twitter @NYCWANT3D44 i will follow back just tell me when you do in a message
DizyVipr 4 days ago
what program is this that khan is using? did he create it or did he download it?
luke75912345 6 days ago
Only video on youtube I have ever seen that has no dislikes xD
this is one great video
luke75912345 6 days ago
thank you so much you just saved my grade :)
blinkfunny 1 week ago
@MissPacGirl then your median is a decimal. It doesnt matter.
TwoTekah 2 weeks ago
The formula for the 25th (Q1) and 75th (Q3) percentiles are (n+2)/4 and (3n+2)/4, respectively. The only reason he uses (9+1)/2, for Q1, instead of (17+2)/4 (which follows the previous formulas) is because he decided to use the center point as his end point for Q1 and starting point for Q3. This gets complicated when you have an even number of data points and your center point is an average of two points, hence the more accepted above formula.
NeftaliPR 3 weeks ago
@JoAnn4729 and @MrOttomatic123
He does the 17+1 because that's the general formula for finding Q(1-3). For the median (Q2) the formula is esentially (n+1)/2 where n is your number of data points. As he mentioned, if there were an even number of data points you would take the mean, or the average, of the two center points. This is a very simple example, which is why it seems silly that he didn't just cross numbers of each side until he reached the middle, or alternatively, multiplied n*0.50.
NeftaliPR 3 weeks ago
What happens when your median is a decimal?
MissPacGirl 1 month ago