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Reivew again Flashcards | StudBud
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Reivew again
Reivew again
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1
From the numbers 1 - 20 (inclusive) what is the probability of getting a multiple of 4?
1/10
1/4
1/20
4/20
2
Mutually Exclusive: Probability of rolling an odd or a number greater than 2
5/6
3/6
2/6
4/6
3
Probability with "or"
Multiply
Add
4
What is condtional probability?
A value that represents the likelihood of an event
Ann outcome or set of outcomes from the sample space
The probability of conditioning
Probability of given event that another one already occurred
5
95% confidence interval refers to:
Considering 95 out of 100 chances are taken as wrong
Considering 1 out of 100 chances are taken as wrong
Considering 5 out of 20 chances are taken as wrong
Considering 1 out of 20 chances are taken to be wrong
6
What is the mode?
31
NO MODE
NONE
25
7
What is a complementary probability?
cumulative distribution
When two events are independent
When you subtract a probability from 1
When two angles add up to 90 degrees
8
What does the confidence interval represent?
range that the true value might lie given size of the difference observed
The statistical significance of the range of values obtained from a study
The actual magnitude of the results obtained in a study
level of confidence that can be demonstrated about the results of a study
9
Which is not a measure of central tendency?
Mean
Median
Range
Mode
10
What is the formula for Independent Probability?
P(A and B) = P (A) • P(B)(A)
P(A or B)= P(A)+P(B)-P(A and B)
P (A and B)=P(A)• P(B)
P (A or B)=P(A)+P(B)
11
Which way is this histogram skewed?
Skewed Left
Skewed Right
Roughly Symmetrical
12
Find the probability of the independent events.
1/8
1/6
1/2
1/12
13
Find the mean.
46.5
184
92
46
14
What are the statistics of dispersion?
Average, median, and mode
Standard deviation, average, and range
Mean, variance, and mode
Range, variance, and standard deviation
15
What is the theoretical probability of drawing a blue marble?
0.5
0.75
0.2
0.25
16
Normal distribution curve is explained using:
Mean and sample
Mean and median
Mean and standard deviation
Median and standard deviation
17
The below distribution is ___________ skewed.
Negatively
Positively
Normally
18
When a distribution of scores is skewed, the best representation of central tendency is
mode
mean
range
median
19
event A occurs at \frac{1}{2}, the probability that event B occurs at \frac{1}{8} both events is \frac{1}{9}
\frac{9}{8}
\frac{1}{9}
\frac{1}{8}
\frac{8}{9}
