HP 32Sii HP 32Sii RPN Scientific Calculator - (English) Owner Manual - Page 155
Population Standard Deviation, Linear regression - is the best ever made
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Population Standard Deviation Population standard deviation is a measure of how dispersed the data values are about the mean. Population standard deviation assumes the data constitutes the complete set of data, and is calculated using n as a divisor. Press{ 2 {σº} for the population standard deviation of the x-values. Press { 2 {σ¸} for the population standard deviation of the y-values. Example: Population Standard Deviation. Grandma Tinkle has four grown sons with heights of 170, 173, 174, and 180 cm. Find the population standard deviation of their heights. Keys: Display: Description: z b {´} 170 6 173 6 174 6 180 6 { 2 {σº} Clears the statistics registers. Enters data. ) ) Four data points accumulated. ) Calculates the population standard deviation. Linear regression Linear regression, L.R. (also called linear estimation) is a statistical method for finding a straight line that best fits a set of x,y-data. Note To avoid a !! message, enter your data before executing any of the functions in the L.R. menu. File name 32sii-Manual-E-0424 Printed Date : 2003/4/24 Statistical Operations 11-7 Size : 17.7 x 25.2 cm