Another way to show the lack of agreement in the data is b\ means of the 

 F test. The ratio of the stereo values to the wave pole values are tabulated 

 in Table 11 = 9 along with the appropriate degrees of frf-edom for each esti- 

 mate. At values of k equal to 15 and 21 there is less thrn' one chance in 100 

 that the two values of AE could have com.e from the same population- 

 Table 11.9. F test applied to wave pole and stereo spectra. 



F test significance level 

 k ddf Stereo Wave pole Ratio 5 % 1_^ Conclusion 



