search for: 7x10

...derstand the best way to obtain a p-value for the significance test would be to resample under the null hypothesis. However, as I am comparing the ratio of means, I do not have individual observations to randomize between the groups. The best I can think to do is create an exhaustive list of all (7x10) = 70 possible observations for m2/m1 from the data. Then create a similar list of all (8x9) = 72 possible observations for m4/m3. Pool all (70+72) = 142 observations and repeatedly randomly assign them to two groups of size 70 and 72 to represent the two ratios and compute the difference in mean...

I have a time series with many millions of points. Each point is of the form (time, value) but where the value is 0 there is no record - ie the data set is sparse. If I plot this using plot(myData) I get a correct plot going from time 0 to time 7x10e7. Given that there are many millions of points (it's not *that* sparse), this looks very busy. But if I attempt to plot this as a line - plot(myData, type="l") - the plot is wrong (it looks like solid semi-sinusoidal curves) and although the x-axis is drawn from 0 to 7x10e7, the pl...