The answers to each question were written to explain how to think about arriving at the answer.

The actual answer is on the line containing the comment #ANSWER. All other lines are there to demonstrate the answer working on actual data or to demonstrate portions of the whole answer so that the whole answer is more easily understood. If the actual required code for an answer takes up several lines then the comment will say #ANSWER (MULTIPLE LINES).

Note that it is very possible that there are valid answers other than the ones shown below.

## 35.2 Final Exam

The final is cumulative in that you MUST KNOW the material from before the midterm in order to be able to answer questions that cover material from after the midterm. See below for the list of questions from the midterm material.

With that said, ALL of the questions on this website are good study material for the final.

For your convenience I listed below those questions on this website that were not listed in the study material for the midterm.

There are plenty of practice questions here but I will try to continue to post additional practice questions.

### Practice Questions - TOPIC: Vectors 1

all material was on the midterm

### Practice Questions - TOPIC Vectors2

The following questions were not in midterm study material:

Questions: 12, 13 (Topic: named vectors)

Questions: 24 (Topic: parallel vectors - wasn’t included for midterm - should have been)

Questions: 32

Questions: 45 - end

### Practice Questions - TOPIC: User Defined Functions

You should do all of these. In addition to basic idea of user defined function, these questions also cover if, while loop, for loop (we will cover the for loop soon)

### FINAL Practice Questions - TOPIC: Dataframes

None of this material was on the midterm. Do all of these. In addition to basic data frame concepts this also covers &, |, sample, lapply

### Practice Questions - TOPIC: Assorted Topics

The following questions were not in midterm study material:

Questions: 74 (topic: dataframes)

Questions: 80 (topics: lists, loops)

### Practice Questions - TOPIC: Parallel Vectors, other assorted questions

The following questions were not in midterm study material:

Questions: 3 (&, |)

Questions: 7,8,9,10,11,12,13,14,15,16,17,18 (&, |)

Questions: 39, 40 (topics: scientific notation)

BELOW ARE THE QUESTIONS THAT WERE FROM THE MATERIAL BEFORE THE MIDTERM. IF YOU AREN’T YET COMFORTABLE WITH THIS MATERIAL YET YOU SHOULD ALSO STUDY THESE AS THE LATER MATERIAL DEPENDS ON THIS EARLIER MATERIAL.

# 36 Midterm Exam

The following questions are related to the material for the midterm.

### Practice Questions - TOPIC Vectors1

1-17 (all questions)

### Practice Questions - TOPIC Vectors2

1,2,3,4,5,6,
8,9,10,11,
14,15,16,17,18,19,20,21,22,23,
25,26,27,28,29,30,31,
33,34,35,36,37,38,39,40,41,42

67, 68,
71a, 71b

none

### Practice Questions - TOPIC: Assorted Topics

73,
75, 76, 77, 78, 79,
81

### Practice Questions - TOPIC: Parallel Vectors, other assorted questions

1,2,
4,5,6,
19,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38