Stats 1/11
Center
One way to describe center of distribution is by its midpoint (median) the value with
roughly half the observations taking smaller values and half taking larger values.
Spread
One way to measure the spread is by giving the largest and sm
Fat-Free Watermelon Sherbet
Prep: 25 min
Freeze: 8 hr
5 cups cubes, seeded watermelon
cup sugar
1 envelope unflavored gelatin
1/3 cup cranberry juice
Place watermelon cubes in a blender or food processor. Cover and blend or process until smooth.
(should
"Every time you smile at someone, it is an action of love, a gift to that person, a beautiful thing." - Mother Teresa
I've learned that people will forget what you said, people will forget what you did, but people will never forget how
you made them feel.
"See the good all around you, even if you have to squint."
Before I met you I never knew what it was like; to look at someone and smile for no
reason. Unknown
If he loves you then don't waste that, you might never be able to get it back. Laurel
True love
Consider this.
If you are not sure that your life is heading in the right direction.
One thing is for sure,
That if you don't change your directions you are going to get where you are going.
Make the change!
and remember your JOURNEY
Braylee
https:/aim.ap
Question 1
0 out of 4 points
How might the
presence of a
single dissenter
influence the
degree of
conformity seen
in a study
modeled on
Asch's classic
investigation?
Answer
Question 2
0 out of 4 points
A therapist
encourages her
patients to
release their
Simpsons Paradox
Simpsons paradox states that an association or comparison that holds for all of several
groups can reverse direction when the data are combined to form a single group.
An example of Simpsons paradox:
Suppose that there are two pilots, Ste
SUMMARY OUTPUT
Regression Statistics
Multiple R
0.8647360825
R Square
0.7477684923
Adjusted R Square
0.7329313448
Standard Error
133.0747472
Observations
19
ANOVA
df
Regression
Residual
Total
SS
MS
F
Significance F
1 892499.634981 892499.635 50.398399809
Power Calculation Example
In our previous SAT score example, we suspected that the mean SAT for California
seniors was more than 450. The standard deviation was 100. Now suppose that an SAT
score of 465 or more is considered important and we would like to
1
2
3
4
5
6
7
8
Second-test Final-exam
score
score
158
145
162
140
144
145
162
170
136
145
158
175
175
170
153
160
a. The 2nd test precedes the final exam
b. A weak postive association.
c. Study habits are more established by the
time of the second test.
Raw data
Country
algeria
argentina
australia
bangladesh
brazil
canada
china
columbia
congo
egypt
ethopia
france
germany
ghana
india
indonesia
iran
iraq
italy
japan
kenya
korea, north
korea, south
malaysia
mexico
morocco
myanmar
nepal
nigeria
pakistan
peru
3.52
Based on the selections provided:
(a) Multistage we first sample 3 of the 7 sections then 8 from each chosen section
(b) Simple Random Sample (SRS) each student has the same chance of being
selected
(c) Voluntary response those who visit the site may
Town in the UK
Number of
Year
Storks
1946
1947
1948
1949
1950
Human
Babies born
8
10
13
16
21
48
55
60
72
83
Column 1
Column 1
Column 2
1
0.993916288
Column 2
1
Town in the UK
Number of
Year
Storks
8
10
13
16
21
48
55
60
72
83
H uma n B a bies & S torks
9
Biology 1082
Dr. Kinkle and Dr. Mosley
Dont sit in the last four rows of the classroom.
Pick up a white card from one of the four corners of the room.
Sit near the tent card with your group number. If you dont know
your group number, there are lists in th
Suggested Review Materials
Looking at Data - Distributions
- Variables categorical and quantitative
- Distribution of a variable tells what values it takes & how often the values occur
- Displaying distributions with graphs
- Categorical variables
. Bar g
Suggested Review Materials
Sampling Distributions for Counts and Proportions
- Counts number, X, of occurrences of some outcome in a fixed # of observations
X
- Sample proportion p =
n
- Binomial setting
- Fixed number n of observations
- The n observatio
Suggested Review Materials
Producing Data
- Use trustworthy available data . beware anecdotal data or evidence
- Two statistical designs for producing data
. Experiments deliberately impose treatments on individuals & observe responses
. Observational stu