STAT 210
Test 2 Formula Sheet
th
Median Location
n 1
2
Sample Mean
X
Sample Variance
s2
Sample Standard Deviation
s=
Lower Fence
Q1 1.5(IQR)
Upper Fence
Q3 + 1.5(IQR)
observation
x
n
(x X) 2
n 1
(x X) 2
n 1
STAT 210
Test 3 Formula Sheet
Sxx =
x2
x 2
n
2
y
2
Syy= y
n
x y
Sxy = xy
n
Correlation coefficient:
Slope =
S xy
S xx
Coefficient of Determination:
r=
S xy
S xx S yy
Intercept = Y slope( X )
r2 =
S xy 2
S xx S yy
STAT 210
Test 5 Formula Sheet
Z-score transformation:
Mean of
p
Z=
:
Standard Deviation of
p
p
X
=
:
p
(1 )
n
Confidence interval for
p Z *
Sample size
n=
p(1 p)
n
2
Z*
(1 - )
m
Test statistic for
Z
p o
o (1 o )
n
X = + Z
STAT 210
Test 6 Formula Sheet
Z-score transformation:
Mean of
X
Z=
:
Standard Deviation of
X
X
X = + Z
X
=
:
X
Confidence interval for
Z*(
X
n
)
n
Sample size determination:
Z*
n
m
Test statistic for
2
Z=
X o
/ n
Confidence interval for
t*(
X
Test 5 Practice Test #3
1.
Consider the three statements below. Draw a circle around any (if any) and all that are valid statistical hypotheses.
H0:
p
= 0.73
H A:
H A:
0.44
X 98 .6
_
2.
Which of the following is the point estimate of the population prop
Test 3 Practice Test #1
During the week of October 2-8, 2011 the lawn area between Harris Hall and the Student Commons contains a display of
red flags. The Red Flag Campaign is a public awareness campaign designed to address dating violence and promote th
Test 2 Practice Test #2
One of the most popular activities for tourists visiting Hawaii is snorkeling, where it is possible to see an assortment of
fish, turtles, eels, octopi, and other sea creatures. A random sample of 24 tourists who visited Hawaii dur
Test 3 Practice Test #2
In the sport of basketball a player scores by shooting a ball through a basket 10 feet in the air, and the goal is to score
more points than your opponent. Five players on a team play at a time, and because of the running involved
Test 6 Practice Test #1
Lymphoma is a cancer in the lymphatic cells of the immune system. Typically, lymphomas present as a solid tumor of
lymphoid cells. Treatment might involve chemotherapy and in some cases radiotherapy and/or bone marrow
transplantati
Final Exam Practice Test #3
Questions 1 through 7 all deal with the following information.
It is of interest to estimate the mean number of classes that all STAT 210 students missed during the fall 2008 semester. A
sample of 50 STAT 210 students was selec
Test 7 Practice Test #3
_ 1.
Which of the following is the point estimate of the difference in population means
(A)
_ 2.
X
(B)
p
(C)
X1 X 2
(D) 0
1 2
?
(E) 1
You have as a goal to estimate the difference between two population means
. To do so you have
1
Test 2 Practice Test #3
1.
Identify which of the following choices is the appropriate description of the statistic listed. It is possible to use a
choice more than once.
(A)
(B)
(C)
(D)
A measure of center that is not resistant to outliers.
A measure of c
Test 7 Practice Test #1
_ 1.
_
Definition: the maximum probability of rejecting the null hypothesis when the null hypothesis is actually true
that a researcher is willing to risk is which of the following?
(A) Significance level
(B) Margin of error (C) Te
Test 5 Practice Test #2
1.
In the current chapter covering statistical inferences on proportions, all of the procedures we have discussed
(sampling distributions, confidence intervals and statistical tests) have involved two assumptions. What are those
tw
Test 4 Practice Test #2
1.
Suppose each of the following variables is known to have an approximate normal distribution. Which of these do
you feel will have a standard normal distribution?
(A) Grade on this test
(B) Weight of students taking this test
(C)
Test 6 Practice Test #3
_
1.
What is the point estimate of the population mean ?
(A) 0
(B) Z
(C)
(D) t
(E) s
X
2.
In the current chapter covering statistical inferences on means, all of the procedures we have discussed (sampling
distributions, confidence
Test 4 Practice Test #1
For questions 1 through 4, write the appropriate answer on the line.
_
1.
Z has a standard normal distribution. What is the probability that Z equals 1.57?
_
2.
What is the standard deviation of a standard normal distribution?
_
3.
Test 7 Practice Test #2
_ 1.
Which of the following is the point estimate of the difference in population means
(A)
_ 2.
3.
X
(B)
p
(C)
X1 X 2
(D) 0
1 2
?
(E) 1
Definition: the maximum probability of rejecting the null hypothesis when the null hypothesis
Test 3 Practice Test #3
For the period November 1, 2013 through February 21, 2014, of interest was to use the average daily low temperature in
degrees Fahrenheit in a city to predict the number of days children in that city missed from school due to weath
Test 6 Practice Test #2
1.
In the current chapter covering statistical inferences on means, all of the procedures we have discussed (sampling
distributions, confidence intervals and statistical tests) have involved two assumptions. What are those two
assu
Test 2 Practice Test #1
_
1.
To estimate the mean age of all students attending her university, a statistician selected a simple random
sample of 15 students. Prior to going on vacation, the statistician collected data for only 13 of the 15
students, and
Final Exam Practice Test #1
On Thursday, December 5, 2013 police in Chesterfield County, Virginia arrested three men following two bank
holdups in as many days. Held up were a Virginia Commonwealth Bank at 4600 W. Hundred Road, and the Union
First Market
Final Exam Practice Test #2
Ferguson, Missouri is a city in St. Louis County, Missouri and is a part of the greater St. Louis metropolitan
area. The population was 21,203 at the 2010 census. In 2014 Ferguson, Missouri has unfortunately made
national news,
Test 5 Practice Test #1
1.
The current chapter has involved making inferences about a population proportion and all the procedures have
required two assumptions. State the two assumptions that must be satisfied in order to complete a sampling
distribution
STAT 210
Test 7 Formula Sheet
Z-score transformation:
Z=
X
X = + Z
Mean of X1 X 2
x1 x 2 1 2
Standard deviation X1 X 2
x1 x 2
Confidence interval for 2
( X1 X 2 ) Z*
Test statistic for 2
Confidence interval for 2
Test statistic for 2
Paired t-Test
Z
1
STAT 210
Lecture 3
Producing Data
January 29, 2016
Test 1
Wednesday, February 3
Questions from 2:00 to 2:10
Test from 2:10 to 2:50 papers due at 2:50!
Covers chapters 1 and 2 (pages 1 42)
Combination of multiple choice questions and
a few written question
STAT 210
Lecture 21
Normal Distributions
March 14, 2016
Test 4
Friday, March 18
2:00-2:10 Questions
2:10-2:50 Test
Covers chapter VI, pages 139 168
Combination of short answer questions and problems
Formulas and normal table provided, please bring calcula
STAT 210
Lecture 27
Confidence Intervals for Population Proportions
Monday March 28, 2016
Test 5
Monday, April 4
2:00-2:10 Questions
2:10-2:50 Test
Covers the chapter on proportions and relevant concepts from
chapter VII.
Combination of multiple choice/fi