miqmac

Ola everyone, kinda need help with Hp 35s scientific calculator...when I am about to calculate the sample standard deviation from values that are weighted I just can not get the right result wotever i do...it really drives me crazy...it calculates samfin but when I compare the output with the output from SPSS /statistics program/, it is just incorrect, and I follow the device manual book. pls if anybody helped, i would be most grateful.