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Average 計算機

 

Average 計算機 Standard deviation 計算機 Variance 計算機

Enter data numbers

1 2 5 2 6 6

 

= 計算 × リセット

Average (mean)

Count

Sum

Average calculation steps

Average = Sum / Count = (1+2+5+2+6+6) / 6 = 22 / 6 = 3.6666666666667

Geometric mean

Root mean square (RMS)

Median

Mode

Population SD

Sample SD

Min value

Max value

Range

Values graph

Distribution graph

* SD = standard deviation

Weighted average 計算機

Average calculation

The average (arithmetic mean) is equal to the sum of the n numbers divided by n:

Example

The average of 1,2,5 is:

Weighted average 計算機

Weight	Number

= 計算 × リセット + Add Row

Weighted average

Sum of weights

Calculation

Weighted average calculation

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

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 計算 these grades with simple average or we can count how many times each grade appears and use weighted average.

2×70,3×80,1×90

Weighted average 計算機

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See also

• Standard deviation 計算機
• Variance 計算機
• Grade 計算機
• GPA 計算機
• Math 計算機

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