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7 15 . ( ) : N = 1 + 3,322 lg n, n ( ), N . , , n = 100, N = 1 + 3,322 × 2 8.
100 (IQ). IQ 72, 134. 8 ( ). : 134 72 = 62. , 8 ( , ). :
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(N) | 1 | 2 | 3 | ... | 8 |
(x min ¸ x max) | 72 79 | 80 87 | 8895 | ... | 128 135 |
(¯) | 75,5 | 83,5 | 91,5 | ... | 131,5 |
(f i ) | 1 | 7 | 32 | ... | 2 |
(F i) | 1 | 8 | 40 | 100 |
, 5- , (, l ). 1- N - : F 1 = f 1; F 2 = f 1 + f 2; F 3 = f 1 + f 2 + f 3 . .
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) (Q) ( ) 4 : 1- (Q 1) 25:75%, 2- (Q 2) 50:50% 3- (Q 3 ) 75:25%.
) (K) 5 : K 1 20:80%, K 2 40: 60%, K 3 60:40%, K 4 80:20%.
) (D) 10 : D 1 = 10%, D 2 = 20%,... D 9 = 90%.
) , () 100 ( ).
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20 () . (. ). , 1-, 2- 3- .
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | |
31 | 32 | 32 | 34 | 36 | 36 | 36 | 37 | 39 | 41 | 42 | 42 | 43 | 44 | 45 | 45 | 45 | 46 | 47 | 48 | |
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Q 1 = 36 Q 2 = 41,5 Q 3 = 45
4 ( 5 ). 1- 5- 6- , 36. , Q 1 = 36. 2- 10- , 41, 11-, 42. 2- (Q 2 = 41,5). 3- 15- 16- (Q 3 = 45).
( 5 4 ) ( 10 2 ).