1 Weighted Average Calculator
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Weighted Average Calculator

Weighted average calculator and calculation. Weighted mean calculator.

Weight Data number
Weighted average:
Total of weights:
Calculation:

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Weighted average calculation

The weighted average (x) is equal to the sum of the product of the weight (wi) times the data number (xi) divided by the sum of the weights:

weighted average

Example

Find the weighted average of class grades (with equal weight) 70,70,80,80,80,90:

Since the weight of all grades are equal, we can calculate these grades with simple average or we can cound how many times each grade apear and use weighted average.

2×70,3×80,1×90

x = (2×70+3×80+1×90) / (2+3+1) = 470 / 6 = 78.33333

 

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MATH CALCULATORS
The condition with one obscure, which after the opening of sections and throwing of comparable individuals takes the structure ah + b = 0, where an and b are discretionary numbers, is known as a direct condition with one obscure. Today we will see how to explain these straight conditions. - For instance, all conditions: 2x + 3 = 7 - 0.5x; 0.3x = 0; x/2 + 3 = 1/2 (x - 2) - straight. The estimation of the obscure that turns around the condition to the right balance is known as the arrangement or the foundation of the condition. For instance, in the event that we substitute the number 2 in the condition 3x + 7 = 13 rather than the obscure x, at that point we get the genuine correspondence 3 · 2 +7 = 13. Henceforth, the worth x = 2 is the arrangement or the base of the condition. Furthermore, the worth x = 3 does not change over the condition 3x + 7 = 13 to a genuine balance, since 3 · 2 +7 ≠ 13. Subsequently, the worth x = 3 isn't an answer or a foundation of the condition. The arrangement of any straight conditions is diminished to the arrangement of conditions of the structure ah + b = 0. Move the free term from the left half of the condition to one side, changing the sign before b to the inverse, we get ah = - b. On the off chance that a ≠ 0, at that point x = - b/a.

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