Statistics
Fall 2016
Chapter 4: Describing Data: Displaying and Exploring Data
Chou
4.1
Measure of Position
standard deviation - the most widely used measure of dispersion.
Another way to describe the spread of data is using the position of values that
Statistics
Fall 2016
Chapter 3: Describing Data: Numerical Measures
Chou
3.1
Measures of Central Tendency
A central value is used to represent the whole data set. Three most common measures: mode, median, and
mean
3.1.1
Mode
The value of the observation t
NCCU
Statistics: Homework #2
Problem 1
A sample data set with a bell-shaped distribution has mean x = 6 and standard deviation
s = 2. Find the approximate proportion of observations in the data set that lie:
a. between 4 and 8; b. between 2 and 10; c. bet
Statistics
Tue., 1:10-4:00pm, 250103
Instructor: Pei-Ting Chou
Email: [email protected]
Office Location: Research Building 503
Office Hours: Wed 12:00-1:00pm (or by appointment)
Reference: Statistical Techniques in Business and Economics, 16th Edition
A
NCCU
Statistics: Homework #1
Problem 1
Higher rates of ice cream consumption and drowning for a city correspond. This leads people
to believe that eating ice cream can somehow put you at risk of drowning. Can you think of
another interpretation?
Solution
Statistics
Fall 2016
Chapter 2: Describing Data: Graphical methods
Chou
2.1
2.1.1
Graphical Descriptive Methods for Qualitative Data
Frequency Table
A grouping of qualitative data into mutually exclusive and collectively exhaustive classes showing the num
#This page will show my solutions toward Coursera 2 quiz
#Week1
data <- read.csv("hw1_data.csv")
#11.
colnames(data)
#12.Extract the first 2 rows of the data frame and print them to the console.
What does the output look like?
data[1:2, ]
head(data, 2)
#1
Chapter 08 - Sampling Methods and the Central Limit Theorem
Chapter 8
Sampling Methods and the Central Limit Theorem
1.
a.
b.
c.
d.
303 Louisiana, 5155 S. Main, 3501 Monroe, 2652 W. Central
Answers will vary
630 Dixie Hwy, 835 S. McCord Rd., 4624 Woodvill