这道统计学的题目怎么做,求各位学霸帮忙解决。
(1)答:70012+72526+775124+82530+8508=154900154900200=7745√(700-7745)2+(725-7745)2+(775-7745)2+(825-7745)2+(850-7745)2=127
(1)答:70012+72526+775124+82530+8508=154900154900200=7745√(700-7745)2+(725-7745)2+(775-7745)2+(825-7745)2+(850-7745)2=127