Chapter 1: Introduction to Statistics
What is Statistics?
Statistics is a field of study concerned with scientific methods for collecting, organizing, summarizing, analyzing,
interpreting, presenting data, as well as drawing valid conclusions and making r
Chapter 2: Organizing the data
In the last chapter we learned how to collect the data. In this chapter we will learn how to organize the data
Lesson 2.1
Frequency Distributions, Histograms
Grouped data is data that has been organized into groups known as
Page 1 of 4
P.3
Functions and Their Graphs
A relation is any set of _.
Domain of a relation is the set of _ coordinates (x-coordinates).
Range is the set of _ coordinates (y-coordinates).
A function is a relation in which no 2 ordered pairs have the same
Math 131. Test 1: Form 3111179
Name:
Instructions. Please complete all problems, and show all appropriate work, and write answers in
exact form unless asked to round. You may use a scientific non-graphing calculator.
1. (5 pts) Let lim f (x) = 6, lim g(x)
Math 131, Test 1 (Form M), October 8, 2013
Name:
Instructions. Do each of the following 8 questions. Show all appropriate details in your
solutions. Please indicate final answers clearly, and write answers in exact simplified form
when possible. You may u
Chapter P and Chapter 1 Review Exercises
1. [chap1,P.1r](Basic Plot)Let y = 3 |x + 3|.
(a) Complete the following table.
7
x
6
5
-4
-3
-2
-1
0
1
y
(b) Plot the graph of y = 3 |x + 3| and determine its x-intercepts and y-intercepts.
Solution:
(a) The compl
Math 131, Test 1 (Form M), January 23, 2013 Name:
Instructions. Do each of the following 8 questions. Show all appropriate details in your
solutions. Please indicate nal answers clearly, and write answers in exact simplied form
when possible. You may use
Math 131. Test 1: Form 3111197
Name:
Instructions. Please complete all problems, and show all appropriate work, and write answers
in exact form unless asked to round. You may use a scientific non-graphing calculator.
1. (5 pts) Let lim f (x) = 2, lim g(x)
Math 131. Test 1: Form 3179
Name:
Instructions. Complete all problems, and show all appropriate work. You may use a scientific
non-graphing calculator.
1. (5 pts) Let lim f (x) = 8, lim g(x) = 3, lim h(x) = 4. Find following limits if they exist. Write
xa
Chapter 2 Review Exercises
1. The limit
8 cos(8) 8
x8
x 8
0
represents f (c) for a functions f (x) and a number c. Find f (x) and c.
lim
Solution: Observe that 8 cos(8) = 8 and so if we write f (x) = 8 cos(x), and c = 8
we have
8 cos(x) 8 cos(8)
8 cos(x)
Math 131. Test 1: Form 3197
Name:
Instructions. Complete all problems, and show all appropriate work. You may use a scientific
non-graphing calculator.
1. (5 pts) Let lim f (x) = 4, lim g(x) = 2, lim h(x) = 6. Find following limits if they exist. Write
xa