Answer:
Range = 13
Mean = 8.4
Variance= 21.24
Standard deviation= 4.61
Step-by-step explanation:
2, 10, 15, 3, 13, 9, 14, 7, 2, 9
For the range
Let the set of data be arranged inn ascending order
Range= higehest value- lowest value
Range = 15-2
Range= 13
For the mean
Mean = (2+2+3+7+9+9+10+13+14+15)/10
Mean = 84/10
Mean = 8.4
For variance
Variance=((2-8.4)²+(2-8.4)²+(3-8.4)²+(7-8.4)²+(9-8.4)²+(9-8.4)²+(10-8.4)²+(13-8.4)²+(14-8.4)²+(15-8.4)²)/10
Variance= (40.96+40.96+29.16+1.96+0.36+0.36+2.56+21.16+31.36+43.56)/10
Variance= 212.4/10
Variance= 21.24
Standard deviation= √variance
Standard deviation= √21.24
Standard deviation= 4.609
Approximately = 4.61
it just depends on which form you need or want but
3 1/4×3
ps click the picture to see the whole thing
3 * x = 28
Divide by 3.
3x / 3 = 28/3
x = 28/3
So, 3 * 28/3 = 28.
17.04 miles and back to feet is 90,000.
The miles number is a decimal that is continuous.
114.2 degrees
Assuming this is on a flat surface, there are 180 degrees in a semicircle. That means if out of 180 degrees an angle takes up 65.8 degrees, then there must be 114.2 degrees left. The equation would look like the following.
180-((angle)+(if other angles))= Left over amount.
Your equation specifically looks like the following.
180-65.8=114.2