What Is The Source Of Energy For The Sun
What is the source of energy for the sun
solar energy and power nuclear fusion
The Grades In Mathematics Of The Students In Section A Are As Follows: 80, 75, 60, 95, 100. What Is The Populaton Mvariance Of Their Group?
The grades in mathematics of the students in section A are as follows: 80, 75, 60, 95, 100. What is the populaton mvariance of their group? Answer: The population variance is 206. Step-by-step explanation: Steps in solving for the population variance: 1) Find the mean by adding the values of (the grades in Math), then divide the sum by number of observations. Total Values (x): ∑x = (60 + 75 + 80 + 95 + 100) ∑x = 410 Population Mean: μ = ∑x/N Where N = 5 μ =410/5 μ = 82 2) Subtract the mean from each x ⇒ (x - μ): 60 – 82 = - 22 75 – 82 = -7 80 – 82 = -2 95 – 82 = 13 95 – 82 = 18 3.) Square each difference between x and mean ⇒ (x - μ)²: (-22)2 = 484 (-7)2 = 49 (-2)2 = 4 (13)2 = 169 (18)2 = 324 4.) Add the results in #3: ∑(x - μ)² = (484 + 49 + 4 + 169 + 324) ∑(x - μ)² = 1,030 5.) Solve of the population variance (σ) by dividing the sum in #4 by the number of observations (N): Population Variance: σ² = ∑(x - μ)² / N σ² = 1,030/5 σ² = 206 Please click the i
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