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What is statistics? | The study of collecting and analyzing data. |
Why statistics matters? | It supports data-based decisions. |
What is data? | Collected information. |
What is population in statistics? | Entire group being studied. |
What is a sample? | Subset of a population. |
What is descriptive statistics? | Summarizing data. |
What is inferential statistics? | Drawing conclusions from samples. |
What is mean? | Average value. |
What is median? | Middle value. |
What is mode? | Most frequent value. |
What is range? | Difference between max and min. |
What is variance? | Measure of data spread. |
What is standard deviation? | Spread around the mean. |
What is probability? | Chance of an event. |
What is random variable? | Numerical outcome of a process. |
What is distribution? | Pattern of data values. |
What is normal distribution? | Bell-shaped distribution. |
What is correlation? | Relationship between variables. |
What is causation? | Cause-and-effect relationship. |
What is hypothesis testing? | Testing assumptions using data. |
What is null hypothesis? | Default assumption. |
What is alternative hypothesis? | Competing assumption. |
What is p-value? | Probability of observed results. |
What is confidence interval? | Range of estimated values. |
What is sampling bias? | Non-representative sample. |
What is outlier? | Extreme data point. |
What is data visualization? | Graphical data display. |
What is statistical significance? | Result unlikely by chance. |
Why learn statistics? | Essential for data analysis. |
Who uses statistics? | Researchers and analysts. |
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