Lot on Monday mornings? To think about whether it Next question, what is the average number of cars in a parking With one data point, youĬan't have variability, so this is not a statistical question. These folks ate zero bricks but maybe it was possible that Variability you have to have multiple data points and should be at least So I might weigh it and I might see my grapefruit weighs one pound, but that's not data with variability. Maybe I'm kinda starting to mess with statistics a little bit, but I'm just getting one data point. Just doing that I am collecting data, so you could argue that So the first question, how much does my pet grapefruit weigh? You know, it's bizarre to begin with to have a pet grapefruit, but is this a statistical question? What do I need to do to answer it? I have to take my pet grapefruit out. Of a statistical question, which of these questions are statistical, would require your statistical toolkit, and which of these are not statistical? So assuming you had a go at it, let's go through these one by one. Before I work through it, think about it. So here I have six questions, and I encourage you to That kinda makes sense, but I need to see some tangible questions or tangible examples of things that are statistical questions and things that are not To answer, you need to collect data with variability. That to answer them, to answer, you need to collect data with variability. Your statistical toolkit is these are questions One possible way to think about when you need to bring out Where we would want to start bringing out our So let's come up with a definition for statistical questions, the type of question So the question we should ask ourselves is what questions in the worldĪre statistical questions? So statistical, statistical questions. Measuring variability, and measuring and finding numbers that somehow represent a pool That we have at our disposal, about collecting data and When should our brain even start getting into statistics mode, thinking about the tools The world of statistics, we should think about How can we can quantify that? How can we put a number on it? How can we measure variability? This is a big aspect of statistics, but we won't do that in this video. Now one of the things we will start doing a lot in statistics is try to measure how much more, how much variability is. There is more variability in this data set. All of these data points are zero, while these, they change a good bit from data point to data point. Grapes they ate yesterday, you immediately see that Someone ate yesterday, the other one is how many So if you look at these two data sets, one is the number of bricks Then next person also survives on grapes, even to a larger degree. "I ate 17 grapes." Then the person after that "I ate 235 grapes." The next person says, "Yeah I like grapes. Then I ask them how many grapes did you eat yesterday? The first person says "I ate zero grapes." But the next person says And I'm already doing statistics just by going out there and asking them how many bricks they ate. Fair enough, so that was our data point on the different data points on. "I ate zero bricks." Then next person says zero, the next person says zero, fourth person says zero, and the fifth person says zero. Person one says, "Iĭon't eat bricks at all. Just as an example of that to just make it a littleīit more concrete, let's say you were to go to five people, and you were to ask them, how many bricks did you eat yesterday? Each of the people say, well I. Is the degree to which data points are different from each other, the degree to which they vary. How much does it vary? How much does it change? It's the same notion in statistics. In everyday language, variability, it's how much something is. Now an idea that willĬome up very frequently in statistics is the So this whole class of just all this stuff that you might do withĭata to answer a question or try to figure out what's going on, or just to learn about the world, the whole class of things It is analyzing the data, analyzing, analyzing, presenting and analyzing data. In tables or charts, or just as lists of numbers, or however you might do it. It's involving collecting data, collecting data. So it generally deals withĭata, collecting data. Exploring the world of statistics, it's worth asking ourself, what is the word statistics even mean? Statistics is really aīroad category of things that you might do with data.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |