Exam 1
Question 1
1 / 1 pts
Which of the following is not a characteristic of a binomial experiment?
Each trial is independent of the other trials in the experiment.
Correct!
The probability of a succ
Quiz 1
Question 1
1 / 1 pts
Which type of data (nominal, ordinal, interval, ratio) is the following
variable?
Number of employees in the Walmart store in Hutchinson, Kansas.
Correct!
ratio
nominal
ord
Introduction to Regression
Analysis
Types of Regression Models
Below is a scatterplot of two variables, X and Y. Note that as X
increases, Y seems to increase in a linear fashion.
There are many
situa
Distribution Shapes; Symmetry
and Skewness
Definition:
The distribution of a set of data is a table, graph,
or formula that provides two things:
1. The values of the observations
2. How often those va
Chapter 4
*TOOK NOTES IN NOTEBOOK FOR ALL CHAPTER
Key Points
Density curve
Z-score
Normal distribution
Standardized normal curve and the standard normal table
Solve VARIOUS normal distribution pr
Section 2.6
Key Points
Measures of spread: Range and standard deviation
Empirical rule
Range
Range: The largest observation minus the smallest observation
Ranges shows how spread out the data are
Chapter 5
Key points
Sampling distribution of the sample mean
Central limit theorem
Finding area of region under sampling distribution curve
Sampling error
Sampling error: An error that occurs whe
U-2, Section 3.6
Key points:
Binomial distribution
-Definition
- formula
- conditions
Application of binomial
Bernoulli trial = Two possible outcomes
Binomial distribution= independent Bernoulli tri
Pages 24 to 25 in your textbook
1.3.1 In each of the following studies, identify which sampling technique best describes the way the data
were collected (or could be treated as if they were collected)
2.3.12 Consider the data from Exercise 2.3.11. Determine the mean of the 36 observations. (Hint: Note
that there is one 5 but there are two 7s, three 8s, etc. Thus, 5+7+7+8+8+8+=5+2(7)+3(8)+)
Number o
Chapter 4
Density curve = are under the curve is 1
symmetric density curve
A variable follows a normal distribution
Ex. (in notebook)
Key Points:
Density curve
Z-score
Normal distribution
Standar
Running Head: Probability Project
1
Probability Project
Name:
College:
Professor:
Course:
Date:
Probability Project
2
Expectation
The expected value at the start of the game (before the contestant cho
CONS OF USING SURVEY
A survey is one of the most important method of collecting data from the population using interviews
and questionnaires. The following are limitations of using surveys in data col