# actual stats material finally!. take a moment to ask yourself have i read chapter 1 yet?

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Actual Stats MaterialFINALLY!

Take a Moment to Ask Yourself

Have I read chapter 1 yet?

What even is Statistics? As previously discussed in class, there are really-big-word-containing definitions out there on the internet.

The practice or science of collecting and analyzing numerical data in large quantities, especially for the purpose of inferring proportions in a whole from those in a representative sample. (Google)

Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data. (Wikipedia)

Statistics is the science of learning from data, and of measuring, controlling, and communicating uncertainty; and it thereby provides the navigation essential for controlling the course of scientific and societal advances. (Amstat.org - which admittedly is a biased source)

Something Closer To Home

“Sounds a lot like control, sense, and alter which can apply to knowledge and to people. For those who do not know, those are the three pillars of a Jedi's use of the force. Statistics is the force.” (Mr. Sanford - a biased source of information for pretty much all his information)

We also learned that Statistics as a subject is something that can provide radical changes in our entire system of perceiving the world (known as paradigm shifts, btw) (paradigm is pronounced para-dime)

We also learned that statistics goes beyond the math. It is the snickers bar which contains the peanuts of mathematics.

Let’s focus on what other people might say.

Some People Say… “Evil.”

“Hard.”

“I hate fat, stupid hobbits statistics.”

“A tool of Satan.”

“A good way to lie.”

“Not even once.”

“Jorbelyjorbelyjorbelyjorbely…”

“I had to take that class twice.”

“Stats is a bad mother shut your mouth.”

I People Say… These people did not take stats from Mr. Sanford.

I turn stats into a class you pass the first time.

Because you understand it.

Like a boss.

AP Stats is “the feel-good math of the year”.

You can quote me on that.

What is AP Statistics about?

Stuff.

Lots of stuff.

For now we will start with data, graphs, and charts.

There will be bar charts and pie charts and lineplots and dotplots…stemplots and boxplots and Donner and Blitzen.

Just kidding on the reindeer.

The Way of the QuizTHAT YOU MIGHT LEARN

Advanced Vocabulary! Harbinger – A sign or message of what is to come, or else the person who delivers such a message or sign.

My quizzes typically are accompanied by three harbingers.

The first harbinger is the set of quiz bulletpoints.

The second harbinger is the practice quiz/quiz review.

The third harbinger is the lunchtime study session which I host to avoid loneliness.

English Is Fun! Our language is really, really fun.

For the first two years I went to college, I was declared as a creative writing minor.

Then I came to ISU, which did not have a creative writing minor at the time.

Of course, they do now, but I am not bitter. Haha.

The verb form of harbinger is not “to harbinge” as one might expect, but is instead “to harbinger”.

Harbingers harbinger.

The 1st Harbinger Quiz bulletpoints are awesome!

They have a 1-to-1 correspondence with the quiz.

This means that if there are 5 bulletpoints given, it is a 5 question quiz.◦ And each bulletpoint, in order, matches a question on that quiz.

They allow you to focus, somewhat, your efforts when studying for the quiz.

The 2nd Harbinger Practice quizzes are often posted before the quiz.

Sometimes this means the night before the quiz.

I do not promise this will always occur, but it will happen often enough.

Even if you do not make time to look at it, printing it and bringing that to the lunchtime session is often worth your time.

The 3rd Harbinger The lunch before a quiz (which is the day before the quiz if you are in first through third hour), I find a way to be available during as much of lunch as possible.

I am there to answer questions you have about the quiz.

If you are nervous about the quiz, come on in even if you do not have specific questions.

You might learn things just from listening to me answer someone else’s questions.

Actual Stats MaterialFINALLY!

What is (are) statistics? Statistics is a way of reasoning designed to help us understand the world.

◦ Includes a collection of tools and methods.

Probably the newest branch of mathematics…and constantly changing.

Statistics are particular calculations made from data.

Numerical summaries of data.

Statistics The branch of mathematics that collects, analyzes, displays, and interprets data.

The art of distilling meaning from data.

Uncovering the story the data have to tell.

…is about variation.

What is Statistics? Statistics is a collection of tools and methods used to help us understand the world.

Statistics is a science…and is built on rationality.

Statistics is an art and can require the use of intuition, common sense, and the concise use of language.

The “New” Math In the recent change to the common core, there have been a lot of people grabbing their torches and pitchforks in order to complain about the “new” math.

It isn’t new math. It is just taught differently. Same math, new teaching style.

This new approach to the same math is exciting to me, because math pretty much never changes.

I think this is part of why people are so nervous. It is really harshing their sense of security.

The “New” Math Geometry is still about the same topics, although different parts of emphasized differently, and there is more of a push towards solving ambiguous problems, the geometry itself has not changed primarily for over 1000 years.

Even in AP Calculus, the material has really only changed in the last 50 years in the regard that new calculators let us do some really sweet stuff.

There have been changes with more advanced calculus courses, mind you.

The “New” Math Statistics changes in a way math doesn’t.

Even at the introductory level.

Statistics, as a field, has changed since last school year started.

A major academic journal refuses to publish articles based on a technique which we learn later called hypothesis testing.

It is still useful to learn, but it is already on the way out as something that will be done in research.

What is data? Values along with their context.

Data is technically a plural term, although it is commonly misused as a singular term.

The singular term is datum.

Mr. Sanford is not honestly all that concerned with whether or not you use proper verb agreement with the word data.

Subject Verb Agreement Statistics (singular) refers to the science of Statistics.

Statistics (plural) are summaries of data.

Data is plural, and datum is singular.

Mr. Sanford does not care too heavily that you use proper subject/verb agreement, but does want you to know the two meanings of Statistics and why they are different.

The Unsupporting CastINCLUDES BUT IS NOT LIMITED TO…

Unsupporting Is Not A Word

It is, however, a critical part of the puntastic nature of the title slide for this section.

You see, there are certain archetypes for people which, as we learn about statistics, are handy to be aware of.

Some of you may even be like these archetypes.

Mr. Cheeseburger I know that it would be more appropriate to use Mr./Mrs./Ms., but I am confident that the original perpetrator was male.

At my senior all night party there was a bouncy house where one could put on huge boxing gloves and take out some aggression on a fellow.

The warning picture for “do not eat” was a cheeseburger. As in the picture had a visible layer of cheese.

I bet there was a story.

The best warning labels have one.

The Internet Agrees

Mr. Cheeseburger Mr. Cheeseburger represents both men and women who need instructions that are so clear and so specific that the rest of us do not even realize those instructions needed to be said.

These people are real and they are out there.

You need to be aware of them, because for all the things they do not seem to know, they always seem to know a good lawyer.

And they will sue.

More to Follow While this is not an exhaustive list, here are some other examples of the unsupporting cast for statistics:

◦ The Casual Observer◦ The Cave Person◦ The Hasty Generalizer◦ The “Scientist” (The quotes are meaningful)◦ The Exemplar◦ The Dissembler◦ The Disbeliever◦ The Competitive Debater

Each of these labels have some degree of meaning outside of their traditional meaning.

Assignments Read Chapter 1 (if you have not already).

Read Chapter 2◦ Walk through the TI tips on p. 14◦ Review Terms and Skills section on p. 15◦ Read “Data on the Computer” on p. 16

Prepare an answer to the following question: Why do we talk about “a statistic” when we don’t discuss “a mathematic” or “a physic”?

◦ As in the singular of physics, not as in medieval medication.

Chapter 2 HW: 2-7, 25, 26◦ We have not discussed these yet, so you are encouraged not to start them

yet.

Quiz Bulletpoints Know what T-S-T stands for and what each one means.

Know how to identify the 5 W’s and How in a study. Know the difference between a qualitative and quantitative variable.

Know how to find percentages from a contingency table.

Know the area principle.