IB Math Studies -- Calculator Skills (Stat/Trig)

The data below have a mean of 50 and standard deviation of 6.  To find P (X < x), input:

Rate your confidence using the GDC for statistics/trigonometry questions.

How do you get your calculator into DEGREE mode?

Where do you find the normal distribution functions on the calculator, anyways?

You want to calculate the mean of the data below.  First step?

Assume that the shaded area has P = 0.84.  How to calculate the lower bound of the shaded area?

I want to find the correlation between two variables.  What is the first step on my GDC?

How do I find the correlation coefficient and equation of the linear regression line?

Uh oh!  My r-value is not showing up!!!!!  What's the solution?

Say you run a chi-squared test.  What's the easiest way to find expected frequencies?

To find correlation, where should I enter my variables?

If this distribution has μ=20 and σ=3, how would you calculate the value of k?

I want to calculate a chi-squared test statistic.  What's the first step?

Once you have mid-interval values, calculate the mean and standard deviation for the data below

Assume a mean of 10 and a standard deviation of 0.5.  How would you find P (X > x₁)?

Your calculator tells you that tan^-1(5/12) = 0.394 . That doesn't seem right.  What's wrong? 

You try to calculate ⦟EFG.  Which calculator command would give you the measure of this angle?

Say I want to calculate the mean of 100 different test scores.  Fastest way?