If a stratified random sample is to be conducted, which of the following is true?
A) The population will be broken down into subgroups called strata.
B) Each subgroup should contain items that are homogeneous with respect to the characteristic of
interest

The mayor of a large U.S. city is interested in addressing complaints from many property owners
regarding recent property assessments. Many people feel that they are being overtaxed and that
their assessments are too high. To study this issue, the mayor p

The human resources department at a major high tech company recently conducted an employee
satisfaction survey of 100 of its 3,000 employees. Data were collected on such variables as age,
gender, marital status, current salary, level of overall satisfacti

The human resources department at a major high tech company recently conducted an employee
satisfaction survey of 100 of its 3,000 employees. Data were collected on such variables as age,
gender, marital status, current salary, level of overall satisfacti

The human resources department at a major high tech company recently conducted an employee
satisfaction survey of 100 of its 3000 employees. Data were collected on such variables as age,
gender, marital status, current salary, level of overall satisfactio

Lab #1 Data Screening
The purpose of data screening is to:
(a) check if data have been entered correctly, such as out-of-range values.
(b) check for missing values, and deciding how to deal with the missing values.
(c) check for outliers, and deciding how

7. Normality
Below, I describe five steps for determining and dealing with normality. However, the
bottom line is that almost no one checks their data for normality; instead they assume
normality, and use the statistical tests that are based upon assumpti

6. Outliers dealing with outliers
First, we need to identify why the outlier(s) exist. It is possible the outlier is due to a
data entry mistake, so you should first conduct the test described above as 1. Finding
incorrectly entered data to ensure that an

4. Outliers Within Groups
Another way to look for univariate outliers is to do outlier analysis within different
groups in your study. For example, imagine a study that manipulated the presence or
absence of a weapon during a crime, and the Dependent Vari

2. Missing Values
Below, I describe in-depth how to identify and deal with missing values.
Why do missing values occur? Missing values are either random or non-random.
Random missing values may occur because the subject inadvertently did not answer
some q

Exam 5 - PSY 211
Course Reference #22021132
Mike Hoerger
Name: _
Section I. Multiple Choice [90 points: 3 points per question]
1
a)
b)
c)
ANOVA is to _ as repeated-measures ANOVA is to _.
single sample t-test; between-group t-test
within-subject t-test; s

Using ANOVA, F will always fall within what range?
6
a)
b)
c)
7
a)
b)
c)
8
between negative infinity and infinity
between 0 and 1
between 0 and infinity
The test statistic chi-square ( 2) is often mispronounced. Chi starts with a _
sound, and rhymes with

11
a)
b)
c)
12
To determine whether an obtained F value is statistically significant, it must be
compared to a critical F value. What two pieces of information are needed to
determine the critical F value?
sample size, number of groups
mean, sample standa

16
Based on the following repeated-measures ANOVA data, estimate the value of F:
a)
b)
c)
Participant
Ellen
Jim
Andrea
Brian
Corey
0.92
1.87
3.68
17
a)
b)
c)
Which of the following would lead to a statistically significant chi-square?
Approximately equal

21
a)
b)
c)
If F = 1, the result is statistically significant
Always
Sometimes
Never
22
a)
b)
c)
Two variables, gender and ethnicity, are most likely
independent
codependent
dependent
23
a)
b)
c)
Type of test typically used for longitudinal studies
ANOVA

26
There are two important chi-square Output boxes in SPSS. One of them is directly
below. Determine which box (A, B, or C) is the correct corresponding second box.
Only one answer is correct. The other boxes contain incorrect information.
2. G end er * 2

Section II. Short Answer [10 points]
31. [6 points] Describe the differences between the following four analyses:
1) correlation, 2) between-group t-test, 3) ANOVA, 4) chi-square
Correlation: compares two continuous variables
Between-group t-test: compare

The human resources department at a major high tech company plans to conduct an employee
satisfaction study by sampling 100 employees from the 3,000 total employees. They plan to use
systematic random sampling since the employee file is in alphabetic orde

If a systematic random sample is to be selected of size 100 from a population with 5,000 items, the
first item selected from the ordered population will be:
A) randomly selected between 1 and 100.
B) randomly selected between 1 and 50.
C) any randomly sel

The Polson Pole and Fence Company recently did a quality check on the length of fence posts. To
do this, each of the 400 posts in inventory was numbered. Numbers from 1 to 400 were placed in a
bowl. Twenty numbers were selected from the bowl without looki

cng chi tit hc phn Kinh t v m I
1. Phng php, hnh thc kim tra - nh gi kt qu hc tp hc phn
Hnh thc Thi gian T trng
im chuyn cn 10%
Trc nghim thi gia k (thi gian, s cu hi, hnh thc.) 20%
Thi cui k:trc nghim trn my tnh 70%
2. Ni dung chi tit hc phn (tn cc chng

BI 1:
thc hin k hoch m rng th trng, Cng ty Mai Linh d kin u t 50 xe
ti van vi gi l 250 tr /xe. = 12.500 tr . Cng ty s thanh ton 30% bng vn ch s
hu, phn cn li c BIDV cho vay 4 nm( gc tr u vo cui mi nm), li sut
l 12%/ nm, li tr hng nm theo d n thc t.
Ngoi

BNG CHO GI CC BIN / SEAFREIGHT QUOTATION
Knh gi: Cng ty TNHH Trc Linh Anh
a ch: No04, C31, khu TC Giang Bin, qun Long Bin, H Ni.
Tel/Fax: (84-4) 36 525 363 Email:[email protected] ATTN:Ms.Hng
Quotation Number/ S Quotation: SALES-002
Dear Ms.Hng
W

KIM TRA
Mn: Ton. Lp 8
Thi gian lm bi 90 pht.
Cu 1: (2,0 im) Thc hin php tnh:
a) 2x2 (3x2 xy 3/2y2)
b) (16x4y3 20x2y3 4x4y4) : 4x2y2
Cu 2: (3,0 im) Phn tch a thc thnh nhn t :
a) 5x(3 2x) 7 (2x -3)
b) x3 4x2 + 4x
c) x2 + 5x + 6
Cu 3: (2,0 im) Cho biu thc:

1.
Gi s c thu v chi tiu chnh ph u gim cng mt lng, khi:
a. C thu nhp quc dn v cn cn ngn sch u khng thayi
b. Thu nhp quc dn s khng thayi
c. Cn cn ngn sch s khng i nhng thu nhp quc dn stng
d. Cn cn ngn sch s khng i nhng thu nhp quc dn sgim
e. C tiu dng v chi

A grocery store is interested in determining whether its customers are satisfied with the quality of
service provided. To collect the necessary data, interviewers have been hired to stand near the
store's exits and to survey customers who have the time an

In developing and conducting a survey, what is the purpose of the pre-test phase?
A) To make sure that the cost of developing the survey instrument is not too great
B) To generate initial data for analysis
C) To catch any problems with the questionnaire b

Based on a survey of 400 students in a university in which 20 percent indicated that they were
business majors. The university student newspaper reported that "20 percent of all the students at
the university are business majors." This report is an exampl

The Biltmore Hotel manager is getting ready to make a presentation that she hopes will justify
adding additional staff. As part of the presentation, she has constructed charts and graphs. The
general type of statistical analysis she is using is:
A) hypoth

Recently, a major tire manufacturer stated in its advertising that its tires with a new tire tread
design will last more than 50,000 miles on average. A consumer agency collected a subset of these
tires and tested them in very controlled conditions. Based