What is the primary difference between a discrete probability distribution and a continuous probability distribution?
There is no difference; both types of distributions represent the same statistical concepts.
Discrete distributions are used for quantitative data, while continuous distributions are used for qualitative data.
Discrete distributions deal with countable data, while continuous distributions deal with data that can take on any value within a range.
Discrete distributions are represented by graphs, while continuous distributions are represented by tables.
Which of the following is an example of a discrete variable?
Weight of a package
Temperature of a room
Height of a student
Number of siblings someone has
What is the range of the following dataset: 7, 12, 4, 9, 15, 11?
8
11
15
4
A dataset contains the ages of students in a class: 18, 19, 18, 20, 21, 18. What is the mode of this dataset?
19
21
18
20
Which of the following is NOT a characteristic of a normal distribution?
Asymmetry with a longer tail on one side
The total area under the curve equals 1
Mean, median, and mode are equal
Bell-shaped and symmetrical
In a deck of 52 cards, what is the probability of drawing a heart, given that you know the card is red?
1/52
1/2
1/13
1/4
A researcher surveys 100 people and asks them how many pets they own. What type of graph would be most appropriate for displaying the frequency of each response (number of pets)?
Pie chart
Histogram
Line graph
Scatter plot
What is the primary goal of hypothesis testing in statistics?
To calculate the exact value of the population parameter.
To prove the null hypothesis is true.
To prove the alternative hypothesis is true.
To determine the likelihood of observing the data if the null hypothesis were true.
What level of measurement is represented by the ranking of restaurants from 1 to 5 stars?
Nominal
Ratio
Interval
Ordinal
Which of the following is NOT a core component of statistical analysis?
Algorithm Development
Probability Assessment
Data Interpretation
Data Collection