8/36
5/18
4/12
4/36
10
60
15
30
252
50
128
500
Yes
No
32%
3.2%
0.32%
0.032%
Lottery 1
Lottery 2
Cannot decide
Lottery 1
Lottery 2
Cannot Decide
Lottery 1
Lottery 2
Cannot Decide
A distribution is equivalent to histogram
The Y-axis of a distribution shows actual frequency
The Y-axis of a distribution shows actual proportion of frequency
The X axis shows bins (categories) or real values
0.5
0.2
0.1
Cannot be computed
A random number having distribution with greater spread has higher average.
A random number having distribution with greater spread has higher variance.
A random number having distribution with greater spread has higher standard deviation.
A random number having distribution with greater spread has higher median.
Extract new information
Test if the sample data supports or does not support a theory
Proove a theory
Disproove a theory
Disproving a theory
Accepting a theory
It is unlikely that the theory holds given the sampled data
We do not accept the results
There were only 500 patients.
Only 40% of the subjects showed actual reduction
Compared to the control group (people who did not take the drug), the treatment group (people who took the drug) showed no statistically significant reduction in SBP.
Nearly 90% of the patients are less than 50 years old
The company did not include paired t-test results.
True
False
Yes
No
X^2
X/(X-1)
X*(X+1)
X