End Game

1
End Game
2
Null hypothesis in Linear Regression Test using
symbols (not words) 100
Check Answer
3
What is Ho ß1 0? 100
4
One-sample procedures are applied to a set of
normally distributed differences from two
dependent samples 200
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5
What is a matched-pair t-test? 200
6
Testing the average SAT scores of males vs.
females from a sample of 50 each at OHS 300
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7
What is a two-sample t-test for means? 300
8
A sample of 50 senior female heights were tested
against the nationally stated average of 56 400
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9
What is a one-sample t-test for mean? 400
10
Also known as a test of homogeneity of
proportions 500
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11
What is a Chi-Squared Test? 500
12
? 125, ? 10, and x 150, then z ? 100
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13
What is z 2.5? 100
14
Of this type of distribution the relationship of
mean, median, and mode is mode gt median gt mean
200
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15
What is right-skewed distribution? 200
16
Data of this kind can be displayed using pie
charts, bar charts, or segmented bar charts 300
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17
What is categorical (qualitative) data? 300
18
This indicates the calculated linear model is not
of good fit 400
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19
What is a pattern in the residual plot,
non-linear trend in scatterplot, or very low r2
value? 400
20
This happens when the line overestimates the
actual outcome 500
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21
What is a negative residual? 500
22
Most useful in establishing cause-and-effect
relationships 100
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23
What is a controlled experiment? 100
24
Sampling everyone in a classroom from a random
selection of classrooms 200
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25
What is clustering? 200
26
This is used in experiments to reduce variation
from extraneous factors by creating similar
groups 300
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27
What is blocking? 300
28
These are the three main components of a
well-designed experiment. 400
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29
What is randomization, control, and
replication? 400
30
These are the 3 main types of bias in sampling
procedures. 500
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31
What is selection bias, non-response bias, and
response bias? 500
32
E(X) 8, sx 3, E(Y) 20, and sy 4 What is
E(Y X) and sy-x? 100
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33
What is E(Y X) 20 8 12 and sy-x ?(32
42) 5? 100
34
Formula for the mean value of a discrete random
variable x 200
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35
What is ?x ?x?p(x), where x is a numerical
outcome and p(x) is the assigned probability for
that x outcome? 200
36
The Empirical (68-95-99.7) Rule can only be used
when this is known about the data. 300
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37
What is a normal distribution? 300
38
These are the 3 outcomes from the Sampling
Distribution of X-bar and Central Limit
Theorem. 400
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39
What is 1. ?X-bar ?X 2. ?X-bar ?X/?n 3. n
must be sufficiently large (generally n ? 30) NO
matter the parent populations distribution? 400
40
These are the 3 outcomes from the Sampling
Distribution of p (proportion) and Central Limit
Theorem. 500
Check Answer
41
What is 1. ?p ? 2. ?p ?(?(1-?)/n) 3. n must
be sufficiently large (np ? 5 and n(1-p) ? 5 )
? 500
42
Under what conditions would it be meaningful to
construct a CI when the data consist of the
entire population 100
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43
What is never? 100
44
Rejected null hypothesis when it was actually
true 200
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45
What is Type I Error? 200
46
Estimated standard deviation of the statistic 300
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47
What is standard error of a statistic? 300
48
Doing this divides the confidence interval size
by 1.414 400
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49
How does doubling the sample size change the CI
size? 400
50
Sample size needed to obtain a 95 confidence
with a margin of error of 4 for a percentage of
voters 500
Check Answer
51
What is 601 voters? 500