Skewing
Skew:
Suddenly change in direction or position.
Normal distribution:
Skewness is zero.
Given data.
Suddenly change in direction or position.
Normal distribution:
Skewness is zero.
Positive skew:
Negative skew:
Mean:
Average of the data.
Median:
For odd data middle no.
For even data there is no single middle no so mean of two middle no's.
Mode:
Most repeated no.
How to skew an image?
Photoshop, ppt, online.
How to skew an image in online?
Search for online skewing image website.
Open the link.
Click on browse button to upload which image you want to skew.
Select edit option.
Skew the image.
How to calculate skewness?
Skewness = (3(Mean - Median))/Standard deviation.
Standard deviation:
Measure that is used to quantify amount of variation of data values.
Quantify:
Measure of quantity.
Example for calculating skewness:
Step 1 :Given data.
2, 4, 4, 4, 5, 5, 7, 9.
Step 2 :
Mean.
(2+4+4+4+5+5+7+9)/8 =5.
Step 3 :
Median.
(4+5)/2= 4.5
Step 4 :
Mode.
0.
Step 5 :
Standard deviation.
(2-5)^2 = 9, (4-5)^2 = 1, (4-5)^2 = 1, (4-5)^2 = 1, (5-5)^2 = 0, (5-5)^2 = 0, (7-5)^2 = 4, (9-5)^2 = 16.
sqrt((9+1+1+1+0+0+4+16)/8) = 2.
Step 6 :
Skewing
3(5-4.5)/2 = 0.75.
Positive skew.
Applications:
Motor.