Chapter Three
Now we consider relationships between two categorical variables. Since the variables are
categorical, their values can be displayed in a contingency table.
Definition: A contingency table (also called a two-way table) is a table whose rows r
Submission Page 1 of 4
Note:
The professor will use this rubric to grade the submission.
Course Number:
960:401
Last (Family) Name: Xu
Rubric
Course Section: 01 First (Given) Name: Chaonan
Directions: Staple the rubric as Page 1 of the paper
document. On-
6-3 From the picture of f(x) we see that the interval 1.5 to 2 has a larger area under
fcfw_x) than the interval 0 to 0.5. Consequently, P[l.5 < X < 2] is the larger of the
two probabilities.
6.7 (a) The median is the time such that there is an equal prob
3.4 The relative frequencies, by row, are
3.5
Faculty
Academic Staff
Student
Favor
0.180
0.176
0.265
Indifferem
0.210
0.308
0.445
0.610
0.516
0.290
The students are somewhat more in favor and much less opposed than either the
faculty or the acad
5.12 (a) No because Zx) =0.3+ 0.5+0.2 +0.1 =1.1 exceeds 1.
[13) Yes
(c) Yes
(1) No because f (x) must never be negative-
5.17 LetA be the event person remembers commercial two hours later.
We are given that PM) = 0.20. Take a 4-sample, and let X: number w
2.1
(a) The percentage in other classes is 100 28.5 13.9 13.4 12.4 9.0 = 22.8 %
(b)
Percentage
30
25-
20
15-
10'
I Percentage
I'D-ad
Waste
Yard
Waste
Paper Plastic Metal
Other
A frequency table for each type of waste is as follows:
Chl
1.10 Answers will vary.
1.12 This is not a yesfno question. Presumably, the bus reaches your stop multiple times
per day. Moreover, a range of times should be specied for which the bus will
characterized as being on-time if it was one second late acco
401 Homework 7th edition:
Chapter 1:
Page 13-14: 1 7 every odd.
Page 20: 19, 21, 23, 25, 27, 31
Chapter 2:
Page 37: 3, 5a, 13, 15, 17, for #19 construct a frequency table with six classes beginning at the
smallest data value, then do a frequency and a rel
RUTGERS UNIVERSITY
Course 01:960:401:04, FALL 2016
Professor:
Basic Statistics for Research
Dr. Michael A. Miniere,
Email address:
[email protected]
Office:
RUTCOR Room 161, Busch Campus
Phone:
At MCC: 732-548-6000 ext. 3741
Office hours:
Tuesday 9:
Chapter 4 (Probability)
Sections 1 and 2:
Definition: An experiment is the observation of some physical occurrence.
Definition: An outcome is the result of a single trial of an experiment.
Definition: An event is any collection of outcomes of an experimen
Chapter 2 Continued
In this course we will need a Measure of Central Tendency.
The Arithmetic Mean (or Mean) of a set of
Mean
x1 x2 xn
n
x
n
n
numbers
Also if the mean is from the sample, we denote it by
denote it by
x
N
. So either we have
; where
X
N
x
Question 1: Which one is it?
- Confidence interval for two
- Compare t
- Multiple regression: some outputs
- Confidence interval for standard deviation
- Chapter 13: Goodness of fit & contingency
- ANOVA: pieces & figure it out
- Influential observations