4 nCr 4

解

4 n C r 4

1

解答ステップ

= \frac{n !}{r ! ( n - r ) !}

挿入

n = 4, r = 4

= \frac{4 !}{4 ! ( 4 - 4 ) !}

\frac{4 !}{4 ! ( 4 - 4 ) !} = 1

= 1

m e d ian 55, 68, 68, 70, 72, 72, 72, 78, 81, 83, 83, 83, 83, 85, 89, 90, 92, 92, 93, 95, 99

r an g e 10, 20, 12, 18, 11

v a r ian ce 4, 5.5, 5, 6.5, 7.5, 1.5, 1, 0.5, 3.5, 2.5, 4, 5, 3.5, 4.5, 6

a r i t hm e t i c m e an 1.69, 1.7, 1.69, 1.71, 1.68, 1.69, 1.68, 1.7, 1.67, 1.68

19 n CR 6