![]() How would you do that? A possible way is to take a field and divide it into 20 pieces, and plant tomatoes here. You ask yourself, which fertilizer should I choose? Which fertilizer produces more tomatoes than the other? In order to answer this question, you set up a small experiment. Let's call them fertilizer A and fertilizer B. For this, you experiment with two different fertilizers. Imagine you are growing tomatoes, and you wish to maximize the yield, and that is the total amount of kilograms of tomatoes that you are harvest. To stay in the spirit of Gosset, let's take a look at an example from agriculture. And this is the learning objective for this video. The two sample t-test is a method to compare means of two groups. For me the story shows that statistics is used to solve problems people encounter in their work and who knows, maybe in your life as well. And this is why the two sample t-test is now also known as a student's t-test. Therefore, he was forced to publish his work under the pseudonym Student. ![]() For confidentiality reasons Gosset wasn't allowed to publish the result under his own name. And to be able to determine which barley had the best use. To deal with this, he developed a special test to be able to draw conclusions from small samples. Therefore, he was faced with only very small samples. And as it is obviously very time consuming to produce barley, he could do not too many trials. Gosset applied his statistical knowledge, to select the best-yielding varieties of barley. He studied chemistry and mathematics and upon graduating he started to work for the Guinness Brewery. This man is called William Sealy Gosset and he lived in England around 1900. So I really want to share this story with you as well. For me, his story shows me that statistics is about solving daily problems and not about abstract formulas and mathematics. It is this story of this man that made me realize that I really like statistics. The professor in front of the group is telling us a story about this man. And around me are sitting about 20 other students. The sun is shining through the window on my left. I am sitting in a medium sized classroom.
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