When you use one sample t Test using Excel, to make sense of the output to determine the statistical significance of the gain, you will look at:

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To determine the statistical significance of the gain using one sample t Test in Excel, we need to look at the mean score, effect size, the value of t, and the value of p. The mean score tells us the average difference between our sample and the population mean. Effect size indicates how large the difference is, independent of sample size. The value of t shows how much the sample mean deviates from the null hypothesis. The value of p indicates the probability of obtaining a result as extreme as the one observed, assuming the null hypothesis is true. Therefore, we need all four pieces of information to make a robust conclusion.

When You Use One Sample T Test Using Excel, to Make