Statistics Knowledge Check
Answer these questions to check your basic statistical knowledge.
1. Consider a dataset of numbers. What is the mean of a dataset?
The middle value of all the numbers
The average of all the numbers
The most common number
The mean is the arithmetic average (sum of values divided by number of values).
2. What is the median?
The most frequent value of all the numbers
The middle value in an ordered list of numbers
The total of all the numbers
The median is the middle value when numbers are sorted.
3. What is the mode?
The value that occurs most often
The middle number
The average value
The mode is the value that appears most frequently.
4. What do descriptive statistics do?
Predict patterns of future populations
Summarize and describe a dataset
Test scientific hypotheses
Descriptive statistics summarize data using measures like mean, median, and graphs.
5. What do inferential statistics do?
Summarize and describe a dataset
only
Use a sample to make conclusions about a population
Count observations and provide a statistical test to determine significance
Inferential statistics use sample data to make conclusions about larger populations.
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