Interpolation When finding percentiles using Figure 35, if the locator L is not a whole number, we round it up to the next larger whole number. An alternative to this procedure is to interpolate. For example, using interpolation with a locator of L = 23.75 leads to a value that is 0.75 (or 3/4) of the way between the 23rd and 24th values. Use this method of interpolation to find P 17 for the chocolate chip counts in Table 34. How does the result compare to the value that would be found by using Figure 35 without interpolation?
L=6.8, leads to a value that is 0.80 of the way between and values.