Which data type is represented by the ranking of athletes in a competition (1st, 2nd, 3rd, etc.)?
Interval
Ordinal
Ratio
Nominal
In a deck of 52 cards, what is the probability of drawing a heart, given that you know the card is red?
1/13
1/2
1/4
1/52
If the p-value is less than the significance level, what decision do we make regarding the null hypothesis?
Fail to reject the null hypothesis.
Accept the null hypothesis.
Conclude that the null hypothesis is true.
Reject the null hypothesis.
Drawing a card from a deck and then drawing another card without replacing the first is an example of:
Independent events
Mutually exclusive events
Dependent events
Complementary events
If you roll a fair six-sided die, what is the probability of getting an even number?
1/3
2/3
1/6
What does a small standard deviation indicate about a dataset?
The data is skewed to the left
The data is skewed to the right
The data points are spread out widely from the mean
The data points are clustered closely around the mean
Every 10th person entering a store is surveyed about their shopping experience. What type of sampling method is being used?
Simple Random Sampling
Stratified Sampling
Cluster Sampling
Systematic Sampling
What does a variance of zero indicate about a dataset?
All data points are the same.
The dataset has a large amount of variation.
The mean is zero.
The data is perfectly normally distributed.
A bag contains 5 red balls and 3 blue balls. What is the probability of drawing a red ball at random?
3/5
5/8
3/8
A researcher wants to study the opinions of nurses in a hospital. They randomly select 5 departments and then survey every nurse in those departments. What sampling method is being used?