x
f 1.65 1.8 1.85 1.86 1.9 1.91 1.93 1.97 2.01 2.02 2.04 2.05 2.07 2.08 2.09 2.14 2.17 2.23 2.25
fa 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1
fr 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20
fra 5% 5% 5% 5% 5% 5% 10% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5%
xi*f 5% 10% 15% 20% 25% 30% 40% 45% 50% 55% 60% 65% 70% 75% 80% 85% 90% 95% 100%
ꭔ=37,7
(xi-ꭔ)²*f
(xi-ꭔ)² 1.65 1.8 1.85 1.86 1.9 1.91 3.86 1.97 2.01 2.02 2.04 2.05 2.07 2.08 2.09 2.14 2.17 2.23 37.7
-36.05