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1. It is a branch of mathematics that studies sets. 2. It is a well-defined collection of objects. 3. It is a set whose elements are unlimited or uncountable. 4. A unit set is a set with only one element, it is also called 5. Two sets are called if and only if they have no elements in common. 6. These are data collected in original form. 7. It is the difference between the highest value and the lowest value in a distribution. 8. It is the most frequently used measure of central tendency. 9. It is the value in a data set that appears most frequently. 10. It is the midpoint of the data array