IB Math Studies Review for Exam - 11th grade (Topic 1-5)

Question 1

You have one column of numerical data and their frequencies, how do you calculate mean?

Accepted Answer

1-var stats

Question 2

If there are 6 genres of music and 4 grade levels, how many degrees of freedom for a Χ2 test?

Accepted Answer

15

Question 3

What is the ratio that yields the cosine of an angle in a right triangle?

Accepted Answer

adjacent side/hypotenuse

Question 4

Before beginning the exam, you should:

Accepted Answer

Read directions carefully, Know where to write your answers, Check that your calculator is in degree mode, Turn Diagnostics on

Question 5

Which letter is used to represent the set of integers?

Accepted Answer

Z

Question 6

What is the volume of a sphere with radius 102 written in scientific notation?

Accepted Answer

4.45 x 106

Question 7

When should you reject H0?

Accepted Answer

If p < significance level, Χ2 test statistic > Χ2critical value

Question 8

Which of the following can you NOT use during the exam?

Accepted Answer

phone

Question 9

When given 3 sides of a triangle, how can you find an angle?

Accepted Answer

Law of Cosines

Question 10

The correct value of π to 5 significant figures is:

Accepted Answer

3.1416

Question 11

Which is the contrapositive of: If I can relax, I will do well on my IB exam.

Accepted Answer

If I do not do well on my exam then I'm not relaxed

Question 12

How can you find the minimum value of the top 10% of this normal distribution?

Accepted Answer

invnorm of area 0.90

Question 13

If r = -.965, you could state that the correlation was:

Accepted Answer

strong, negative

Question 14

Which number is written to 3 significant figures?

Accepted Answer

22.0

Question 15

Which is the symbolic expression for: If I stay up late and I don't eat, then I'll get hangry.

Accepted Answer

p ^ ¬ q ⇨ r

Questions 15