STA2023 Homework and Worksheet Problem List for Test 1
Try to do as much of the homework as possible. Most of the problems are odd numbered, so you
can check your answers in the back of the book.
The problems listed under the Worksheet #1 Problems column,
STA2023 Homework and Worksheet Problem List for Test 2
Try to do as much of the homework as possible. Most of the problems are odd numbered, so you
can check your answers in the back of the book.
The problems listed under the Worksheet #2 Problems column,
STA2023
Lab 1
Name(s):
The following lab is to give you a chance to generate your own graphs and statistics using software.
Paste your graphs and statistics on this word document, use these graphs and statistics to answer a few questions, and then
submit
Ch.3 Displaying and Summarizing Quantitative Data
Sections 3.1-3.8
Displaying Quantitative Data : histograms, relative frequency histograms, stem-and-leaf displays, dotplots, boxplots
Ex1
Suppose we asked each student in this class their age.
19
21
22
22
Chapter 14 Random Variables and Probability Models sections 14.1 14.5
Defn
A Random variable is a variable in which its numeric value is based on the outcome of a random event.
Random variables are denoted with capital letters.
Ex.
Ex1
X = Random Variable
Chapter 7
Ex1
Linear Regression
Sections 7.1-7.3, 7.5-7.7
Data collected from a burrito eating contest included the number of burritos the contestants were able to
eat in 10 minutes as well as their ages
Contestant
Age
# burritos in 10 min
1
10
4
2
21
8
3
Ch.1 Stats Starts Here Sections 1.1-1.3
Data vs. Datum
Data (plural) are values along with their context. Think of data as any collection of numbers, characters, images,
or other items that provide information about something.
Datum(singular)
Statistics
Chapter 4 Understanding and Comparing Distributions
Sections 4.1-4.3
Comparing groups with Histograms
Ex1
The following values give the age and status (full-time or a part-time) for students in a Statistics class.
19F
21F
18P
17F
37F
23F
28F
28P
24P
31F
2
Chapter 5 The Standard Deviation as a Ruler and the Normal Model
Sections 5.1-5.5
The standard deviation tells us how the whole collection of values varies. It can be used to measure where a
particular value stands with respect to the mean.
Recall: The st
Chapter 12
Sections 12.1 12.3
From Randomness to Probability
Some Terms
Phenomenon
Ex: toss 2 coins, one at a time, record the order H and T
Trial
Ex:
Outcomes possible values from a trial
Ex:
Sample Space- list of all possible outcomes from 1 trial
Ex:
E
Chapter 10
Sample Surveys
Sections 10.1-10.7
Recall: Population, sample, population parameter, sample statistic from chapter 1.
Example to work with: We wish to know the average cost of house insurance for Florida homeowners.
Sample Survey a study that as
Chapter 13
Probability Rules
Sections 13.1 13.4
Recall: When events A and B are disjoint, P(A or B) = P(A) + P(B)
The General Addition Rule (will work whether A and B are disjoint or not)
For any events A and B,
P(A or B) = P(A) + P(B) - P(A and B)
Ex1
Ro
Ch.2 Displaying and Describing Categorical Data
Section 2.1 and part of 2.2
Skip discussion on conditional distributions and segmented bar charts
Displaying & Describing Categorical Data: frequency tables, relative frequency tables, bar charts, relative f
Chapter 11
Experiments and Observational Studies
Sections 11.1-11.6
Observational Study a study in which data are collected by observation
Retrospective study researchers first identify subjects then collect data on their past records
Prospective study re
Ch. 8
Regression Wisdom
Sections 8.2-8.3
Extrapolation a prediction made for a value of x that is far from the x-values that were used to come up
with the model (far from the scope of the data)
Outliers, Leverage, and Influence
Outlier any point that stan
STA2023
Extra Credit #3 (chapters 15-19)
Directions:
Answer the questions on this pdf. Then use your answers to complete the quiz located in the
Extra Credit #3 Assignment on Canvas.
I will post worked out solutions after the due date
Note:
I will not ne