JANUARY PROBLEM 2
Method A
Arithmetic average =
x= x 1 +x 2 +...+x n
n
x= 1.40+2.50+1.55+1.60+2.70+1.75+7.80+1.85+1.90+2.95+2.100+1.105+1.115+1.125+1.135
25
x= 40+100+55+60+140+75+560+85+90+190+200+105+115+125+135
25
Arithmetic average =
2075
25 = 83
Standard deviation:
√
1849+2178+784+529+338+64+63+4+49+288+578+484+1024+1764 +2704
24
Standard deviation =
12700
24 = 23,003621…
Method A was analyzed by Duygu Ç. and Tuğba Ş.