how many pictures is enough how to find the standard deviation of the bubbles in an image average histogram for number of bubbles how much time should it take to capture bubbles how often should i take photos of bubbles when using bootstrapping how many bubbles are in a photograph what is the standard deviation and correlation how to find out the normal range of a data set? how to estimate a histogram of bubbles how do you plot bubbles what is the standard deviation of a histogram how to calculate the standard deviation of an image how do we find standard deviation what makes a histogram skewed why is the standard deviation of a histogram large in a small dataset? how to get the standard deviation if a sample is random how many bubbles in the x which parameter of the data is the standard deviation of a histogram? how does bootstrapping work when to plot histogram of numbers of bubbles