Biostatistics in brief made easy related files 5b5c458e3e138681cb68706b31fa4296 powered by tcpdf wwwtcpdforg 1 1. Biostatistics in brief made easy by k visweswara rao 9788184487602 available at book depository with free delivery worldwide. Biostatistics in brief made easy 1st edition related files 6bf0fd0669e31b7f0956c63ec5ef6126 powered by tcpdf wwwtcpdforg 1 1. Get author k visweswara raos original book biostatistics in brief made easy from rokomaricom enjoy free shipping cash on delivery and extra offers on eligible purchases. In biostatistics when comparing the means of two independent groups of subjects using an unpaired student t test then you need 16 pairs of measurements such as 16 subjects each with a pre treatment and a post treatment value credit illustration by wiley composition services graphics for other values use this rule of thumb to estimate sample size you need about 8 2