A histogram divides sample values into many intervals and represents the frequency of data values in each interval with a bar.
The histogram visually shows the results of the hypothesis test. The randomization samples represent what a random sample would look like if the population means were equal, so the histogram is centered around 0. For a onesided test, a reference line is drawn at the difference in means of the original sample. For a twosided test, a reference line is drawn at the difference in means of the original sample and at the same distance on the opposite side of 0. The pvalue is the proportion of sample differences that are more extreme than the values at the reference lines. In other words, the pvalue is the proportion of sample differences that are as extreme as your original sample when you assume that the null hypothesis is true. These differences are colored red on the histogram.
An individual value plot displays the individual values in the sample. Each circle represents one observation. An individual value plot is especially useful when you have relatively few observations and when you also need to assess the effect of each observation.
Minitab displays an individual value plot only when you take only one resample. Minitab displays both the original data and the resample data.
In these results, the null hypothesis is that the population difference is equal to 0. The alternative hypothesis is that the difference is not equal to 0.
 
 

The number of resamples is the number of times Minitab takes a random sample from your original data set. Usually, a large number of resamples works best. The sample size for each resample is equal to the sample size of the original data set. The number of resamples equals the number of observations on the histogram.
The average is the sum of all the differences in means of the randomization sample divided by the number of resamples. Minitab displays two different values for the difference in means, the difference of the observed samples and the difference of the bootstrap distribution (Average). Both these values are an estimate of the difference in population means and will usually be similar. If there is a large difference between these two values, you should increase the sample size of your original sample.
The standard deviation is the most common measure of dispersion, or how spread out the data are about the mean. The symbol σ (sigma) is often used to represent the standard deviation of a population, while s is used to represent the standard deviation of a sample. Variation that is random or natural to a process is often referred to as noise. Because the standard deviation is in the same units as the data, it is usually easier to interpret than the variance.
The standard deviation of the bootstrap samples (also known as the bootstrap standard error) is an estimate of the standard deviation of the sampling distribution of the difference in means.
Use the standard deviation to determine how spread out the differences from the bootstrap sample are from the overall mean of the differences. A higher standard deviation value indicates greater spread in the differences. A good rule of thumb for a normal distribution is that approximately 68% of the values fall within one standard deviation of the overall mean of the differences, 95% of the values fall within two standard deviations, and 99.7% of the values fall within three standard deviations.
Use the standard deviation of the bootstrap samples to determine how precisely the differences from the bootstrap sample estimate the population difference in means. A smaller value indicates a more precise estimate of the population difference. Usually, a larger standard deviation results in a larger bootstrap standard error and a less precise estimate of the population difference. A larger sample size results in a smaller bootstrap standard error and a more precise estimate of the population difference.
The pvalue is the proportion of sample differences that are as extreme as your original sample when you assume that the null hypothesis is true. A smaller pvalue provides stronger evidence against the null hypothesis.