ROUNDING
2DP
NOTE
Σ
Weight 0 ignores a pair
Σ(v×w) ÷ Σ(w)
PAIR 1
PAIR 2
PAIR 3
WORKING
—
—
—
—
WEIGHTED MEAN
READY
—
PAGE 1/2
ROUNDING
2DP
NOTE
Σ
Weight 0 ignores a pair
Σ(v×w) ÷ Σ(w)
PAIR 1
PAIR 2
PAIR 3
WORKING
—
—
—
—
WEIGHTED MEAN
READY
—
PAGE 1/2
HOW TO USE
1) Enter value + weight
2) Weight 0 ignores a pair
3) Press SOLVE
4) Read working + answer
FORMULA
mean = Σ(v×w) ÷ Σ(w)
Multiply each pair
Add, then divide
WORKED EXAMPLE
70×2 + 40×1 = 180
2 + 1 = 3
ANSWER
180 ÷ 3 = 60
If Σ(w)=0 → ERROR
Set a weight > 0
PAGE 2/2