How To Find Correlation Coefficient On Ti 89

Thinking of using the TI 89 for statistics? The TI 89 is a hand held calculator that can be used for just about whatsoever math grade, from algebra to complex analysis. If you're a math major, you probably own one. But fifty-fifty if you aren't a math major, it can be useful to help y'all calculate many stats bug easily.

In that location are two types of TI 89:
The TI 89 Titanium is packed with helpful and useful features. It boasts back up for near every major loftier-school and college class. This model has a large screen with icons rather than menus. That means it's easy to discover what you are looking for. The regular TI 89 is almost identical. All the same, the Titanium has increased retention size, speed, and a direct USB connexion.

Looking for a specific topic? Hit CRTL + F on your keyboard, so type in a search term in the search box.

TI 89 for Statistics: Basics

How to Simplify on the TI 89 (CalculusHowTo.com)
How to Expand a Binomial on the TI 89
Error Codes (CalculusHowTo.com)

TI 89 for Statistics: Probability

How to Calculate Binomial Probability on the TI-89 Graphing Estimator
How to Employ the TI-89 to calculate combinations

TI 89 for Statistics: Descriptive Statistics

How to Find a Five Number Summary and Create a BoxPlot on the TI-89 Graphing Calculator
How to Calculate Mean and Standard Deviation for a Binomial Distribution on the TI-89
How to Graph a Cumulative Frequency Table on the TI-89 Calculator
How to Create a Frequency Chart or Histogram on the TI-89 Titanium
How to Observe Q1, Q3 and the Interquartile Range on the TI-89 calculator
How to Make a Scatter Plot on the TI-89 Calculator
How to Detect the Mean, Median, and Mode on the TI-89 Reckoner
Variance on a TI-89 Calculator
Standard Deviation on the TI-89 Computer

TI 89 for Statistics: Tests, Regression

Regression on the TI-89
Z Score on the TI 89 (Left Tailed Examination)
How to Find a T-Distribution on the TI 89
How to Find an F Distribution on the TI89
How to Find a Confidence Interval for a Mean (Known Standard Deviation)
Normal Distribution Word Bug on the TI-89: Finding Cut Off Points For a Top Percentage
How to Employ a TI-89 Graphing Reckoner for a Hypothesis Test on a Mean
How to Use a TI-89 Estimator For Large Sample Hypothesis Testing (Proportion)
How to Use a TI-89 for Figuring out Confidence Intervals
Solving Central Limit Theorem Word Problems on the TI-89 Graphing Estimator
How to Discover a Critical Value on a Ti-89 Titanium (Left-Tailed examination)

Calculus

Articles on CalculusHowTo.com:

Finding asymptotes.
How to find derivatives.
How to Graph and evaluate a Function
Intersection and Trace on the TI-89
Create a Table of Function Values on the TI-89
Detect Limits on the TI 89
Piecewise Functions TI 89 "when(" Command
How to Observe Roots/Zeros of a Function on the TI-89
Error Codes
How To Simplify An Expression

Algebra

How To Cistron The Difference Of Two Squares On The TI-89

TI 89 for Statistics: How To Factor The Difference Of Two Squares On The TI-89

Factoring the deviation of ii squares probably brings dorsum nightmares from simple algebra. Past hand, it involves identifying mutual factors and oft a long (nasty-looking) calculation that'south prone to errors. Technically, a term is a perfect square when the number in front of the variables (the numerical coefficient) is a perfect square and the exponents are even numbers. If you want to factor the difference of two squares, it can be washed hands on the TI-89 graphing calculator and is as simple as pressing a few buttons.

Case Problem: Factor the following function: f(x) = y² – sixteen

Step 1: Press the HOME key.

Step 2: Press F2 and and then 2 to admission the "factor" part.

Step iii:
(Y^2)-(xvi))

Step 4: Press ENTER. Your reply volition be (y – 4) (y + iv).
That's it! You're done!

The TI graphing calculators are recommended for AP statistics (and are allowed to be taken into exams). You tin get ane on eBay or Amazon.com for about $90 (don't buy information technology from a college bookstore—yous'll pay full toll, $150+!).

Why should you buy a TI-89 Calculator for your elementary statistics form?

Hither is an instance of how like shooting fish in a barrel the TI-89 makes statistics:

Variance and Standard Deviation problems are peradventure the most basic problems elementary statistics students are taught. They are taught in the first couple days of any statistics class. Here's the difference betwixt calculating variance and standard deviation manually, versus using the TI-89:

Detect the variance and standard deviation of 12, 48, 79, 99, 101.

Manually

Footstep 1: Add the numbers in the list.
12 + 48 + 79 + 99 + 101 = 339

Step ii: Square the sum, and divide past the number of items in the data set up:
339 × 339 = 114,921
114,921 / v = 22,984.2

Pace 3: Take your original numbers from pace i, square them individually, and add them upward:
(12 × 12) + (48 × 48) + (79 × 79) + (99 × 99) + (101 × 101) = 28,691

Are y'all getting bored withal?

Pace iv: Subtract the amount in step ii from the corporeality in step 3:
28,691 – 22,984.two = 5,706.799999999999

Step 5: Subtract one from the number of items in my data ready:
five – 1 = 4

Footstep 6: Carve up by the number in step 4 by the number in step v:
5,706.799999999999 / iv = 1,426.6999999999998

That'due south the Variance.

Step 7: Have the foursquare root of the number from step 6.
√(1,426.6999999999998) = 37.77168251481525

That's the Standard Divergence.

Using the TI-89

Step 1: Enter the list of numbers.

Footstep 2: Select the Variance or Standard Deviation functions, depending on which you lot want.

Stride 3: Yawn and stretch. There is no step 3! You're done!

Still non convinced that the TI-89 will salve you time and stress?

Let's look at how the calculator can aid you with a more complex problem, like Linear Regression. The calculation for Linear Regression volition have yous 15 to 30 minutes depending on how confident you are with your math skills. Y'all can find a linear equation on a TI-89 in less than a infinitesimal!

Here are the methods, side by side:

Manual Linear Regression

Pace 1: Make a chart of your data, filling in the columns in the same manner as you would fill in the nautical chart if you lot were finding the Pearson's Correlation Coefficient.

Subject field	Age ten	Glucose Level y	xy	x²	yⁱⁱ
i	43	99	4257	1849	9801
2	21	65	1365	441	4225
3	25	79	1975	625	6241
iv	42	75	3150	1764	5625
5	57	87	4959	3249	7569
6	59	81	4779	3481	6561
Σ	247	486	20485	11409	40022

From the to a higher place table, Σx = 247, Σy = 486, Σxy = 20485, Σx2 = 11409, Σy2 = 40022. n is the sample size (6, in our case).

Step 2. Use the following equations to find a and b.

Notice a:

((486 × 11,409) – ((247 × 20,485)) / half dozen (11,409) – 247^two)
5,544,774 – (v,059,795 / 7,445)
=553,794

Find b:

(6(xx,485) – (247 × 486)) / (6 (11409) – 247ⁱⁱ)
(122,910 – 120,042) / 68,454 – 247^two
2,868 / 7,445
= .385225

Step 3: Insert the values into the equation.
y' = a + bx
y' = 553,794 + .385225x

TI-89 Linear Regression

Step 1: Enter the X and Y values into the TI-89.

Step 2: Select the Linear Regression Function from the menu.

Expecting more? Sorry to disappoint: yous're done.

Think well-nigh how much test time the TI-89 will save you!

I take built online calculators for a couple of mutual statistics calculations, but no online figurer can compare with the hundreds of functions available in the TI-89. Plus, you aren't typically allowed to utilise online resource during an exam (and fifty-fifty if you are, what happens if the internet goes downward?).

Lost your guidebook? Bank check out the TI-site. You can download a new guidebook here.

Cheque out our Youtube channel for more than stats tips and TI 89 for statistics topics.

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