The variance is the total of the squared distances of the given data from the mean.
This can be calculated through the equation,
σ² = summation of X² / N - μ²
where σ² is the variance X's are the data, N is the number of terms, and μ is the mean.
summation of X² = 100² + 100² + 120² + 120² + 180² = 81200
N = 5
μ = (100 + 100 + 120 + 120 + 180) / 5
μ = 124
Substituting these values to the equation for variance,
σ² = (81200/5) - 124² = 864
Thus, the variance is equal to 864.
17/10
or 1 7/10
i did it on my calculator lol
Answer:
0.85 pages per minute
Step-by-step explanation:
8 1/2 ÷ 10 = 8.5 ÷ 10 = 0.85
Answer:
y=2x-2
Step-by-step explanation:
Slope intercept form y= mx+b
y-4 = 2(x-3)
y-4= 2x-6
y-4+4= 2x-6+4
y= 2x-2
