Why is understanding the difference between descriptive and inferential statistics important?
It is not important; both types of statistics are used interchangeably.
It is only important for professional statisticians, not for beginners.
It helps in choosing the appropriate statistical methods for analysis.
It is mainly relevant for complex statistical research, not everyday data analysis.
Which of the following is an example of a qualitative variable?
Favorite color
Height in centimeters
Number of siblings
Temperature in Celsius
Which chart type is most suitable for visualizing the relationship between two continuous variables?
Pie Chart
Box Plot
Scatter Plot
Bar Chart
A frequency distribution shows the:
Probability of a particular outcome in an experiment
Number of times each value of a variable occurs in a dataset
Spread or variability of data points around the mean
Average value of a variable in a dataset
The area under a probability distribution curve represents:
The probability of a specific value occurring
The total probability of all possible outcomes, which always equals 1
The mean of the distribution
The standard deviation of the distribution
What is the primary difference between a discrete probability distribution and a continuous probability distribution?
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.
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.
What percentage of data falls below the first quartile (Q1) in a dataset?
50%
75%
25%
100%
In a probability distribution, what does a higher peak indicate?
Smaller sample size
Lower probability of values around the peak
Higher probability of values around the peak
Greater variability in the data
Which of the following data types is most suitable for storing the number of children in a family?
Nominal
Continuous
Ordinal
Discrete
A bag contains 5 red balls and 3 blue balls. What is the probability of drawing a red ball at random?
3/8
1/2
5/8
3/5