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Questions and Answers
What are the types of data?
The types of data are primary and secondary data.
What are the measures of central tendency?
The measures of central tendency are mode, median, and geometric mean.
What are the different ways to present data?
Data can be presented using bar diagrams, pie diagrams, line graphs, histograms, and frequency polygons.
What are the measures of dispersion?
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What is correlation?
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Study Notes
Types of Data
- Qualitative data: Non-numerical, descriptive data, such as colors, flavors, or opinions.
- Quantitative data: Numerical data, such as numbers, measurements, or counts.
Measures of Central Tendency
- Mean: The average value of a dataset, calculated by summing all values and dividing by the number of data points.
- Median: The middle value in a dataset when it is arranged in order, which represents the 50th percentile.
- Mode: The value that appears most frequently in a dataset.
Data Presentation
- Tables: Organized arrangements of data in rows and columns.
- Charts: Visual representations of data, such as bar charts, pie charts, and line graphs.
- Graphs: Visual representations of data, such as scatter plots and histograms.
Measures of Dispersion
- Range: The difference between the largest and smallest values in a dataset.
- Interquartile Range (IQR): The difference between the 75th percentile (Q3) and the 25th percentile (Q1).
- Variance: A measure of how spread out a dataset is, calculated as the average of the squared differences from the mean.
- Standard Deviation: The square root of the variance, which provides a measure of spread in the same units as the data.
Correlation
- Positive correlation: When two variables tend to increase or decrease together.
- Negative correlation: When one variable tends to increase when the other decreases, and vice versa.
- No correlation: When there is no consistent relationship between two variables.
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Description
Test your knowledge of the fundamentals of Statistics and data organization with this BBA I Year quiz. Explore topics such as statistical investigations, laws of statistics, types of data, collection methods, and frequency distribution.
