HP 35s HP 35s scientific calculator - User Guide - Page 170
Statistical Calculations, Mean, Statistics Menus, Description
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Reenters the first data pair. There is still a total of two data pairs in the statistics registers. Statistical Calculations Once you have entered your data, you can use the functions in the statistics menus. Menu L.R. x ,y s,σ SUMS Statistics Menus Key Description The linear-regression menu: linear estimation ˆ ˆ and curve-fitting See ''Linear Regression'' later in this chapter. The mean menu See "Mean" below. The standard-deviation menu See "Sample Standard Deviation" and "Population Standard Deviation" later in this chapter. The summation menu See "Summation Statistics" later in this chapter. Mean Mean is the arithmetic average of a group of numbers. Press for the mean of the x-values. Press for the mean of the y-values. Press for the weighted mean of the x-values using the y-values as weights or frequencies. The weights can be integers or non- integers. 12-4 Statistical Operations