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Stats Quiz 2 for Module 1 Flashcards | StudBud
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Stats Quiz 2 for Module 1
Stats Quiz 2 for Module 1
20 terms
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StudBud Administration
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Questions
20
Answers
1
Too unlikely to occur by chance
range of error
sampling error
region of rejection
error rate
2
What is the standard deviation of a z-score?
0
-1
1
-1 or 1
3
In a normal distribution, percentage of scores within two standard deviations of the mean?
34
68
45
95
4
Rolling two dice and getting a sum of 5
1 out of 18
1 out of 36
1 out of 6
1 out of 9
5
Erdos number of 2
Done statistics with Paul Erdos
Written a paper with someone who wrote a paper with Erdos
Written a paper with Paul Erdos
Read Paul Erdos work
6
Selecting people by not randomly
standard assignment
convenience sample
probability
random assignment
7
Percentage of z-scores below -2.0
95
5
10
2.5
8
The most frequent in a normal distribution
middle
all scores are most frequent
closest to right
closest to left
9
Why use the standard deviation instead of the variance?
variance is multi-modal
variance underestimates average deviation
standard deviation is more complicated
variance overestimates average deviation
10
Used to find population means and SDs
combinatorics
central limit theorem
statistics
probability
11
The difference due to random chance
sampling difference
sampling mean
sampling error
mean error
12
Z-score in Excel
=zscore(A5,M1,S1)
=normal(A5,M1,S1)
=average(A5,M1,S1)
=standardize(A5,M1,S1)
13
Given you have flipped a coin twice and gotten heads, the chance of getting heads a third time
1 out of 8
None
1 out of 4
1 out of 2
14
Mean of 30, SD of 9 and Z-score of -2.5
12
7.5
55
23
15
Chart for Probability
pie chart
histogram
bar chart
line chart
16
the chance of flipping three coins and getting three heads
1 out of 4
1 out of 8
none
1 out of 2
17
Chance of getting face card out of a deck of cards
3 out of 13
1 out of 13
6 out of 13
1 out of 52
18
Rolling a die and getting a 1 or 2
1 out of 2
1 out of 6
2 out of 3
1 out of 3
19
Mean of 50, SD of 6, Z-score of 1.5
62
51.5
59
38
20
In a normal distribution, percentage of scores within one standard deviation of the mean?
68
45
34
95
