Research and statistical analysis help us understand how the world works, how effective medications and treatments are, what influences our health, the best approach for business practices, and much ...

Null hypothesis vs. hypothesis, which is the right choice? When you get into the different methods of analyzing data, there is no shortage of tools at your disposal. Understanding the difference ...

In Hypothesis Testing 1, you were introduced to the ideas of hypothesis testing in the context of deciding whether a coin was fair or biased in favor of heads. In this section hypothesis testing ...

Researchers design studies that might disprove what’s called their null hypothesis – the opposite of the claim they’re interested in exploring.

"We think we can make something better or find out what is going on in this interesting area if we try a bunch of things and apply several sophisticated techniques to study this." These proposals are ...