If a distribution is skewed to the right, what is the relationship between the mean and the median?
Mean is less than the median.
Mean is greater than the median.
Mean is equal to the median.
The relationship cannot be determined.
If you want to visualize the proportion of different departments' expenses in a company, which chart type is most appropriate?
Box Plot
Pie Chart
Scatter Plot
Histogram
Which of the following is NOT a type of discrete probability distribution?
Poisson distribution
Binomial distribution
Bernoulli distribution
Normal distribution
If you roll a fair six-sided die, what is the probability of getting an even number?
1/2
2/3
1/3
1/6
The 25th percentile is also known as the:
Interquartile Range
Third Quartile
First Quartile
Second Quartile
What is the mode of the following dataset: 2, 5, 3, 2, 8, 2, 6?
6
2
5
8
What does the significance level (alpha) represent in hypothesis testing?
The strength of the relationship between variables.
The probability of obtaining the observed data.
The threshold below which we reject the null hypothesis.
The probability of making a Type II error.
If the range of a dataset is 20, and the smallest value is 5, what is the largest value?
15
Cannot be determined
25
20
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
What type of chart is best for displaying the distribution of a single continuous variable?
Bar Chart