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Statistics Quiz 18 (25 MCQs)

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1. Which of these shapes is the symmetrical and bell-shaped distribution of a random variable?
2. In a certain community, 30% of households have 1 child, 43% have 2 children, and 27% have 3 children. If a household is selected at random, what is the expected number of children in that household? HINT:It may be helpful to make a probability distribution table.
3. If the entire population is surveyed, the type of survey is a/an:
4. What percentage of scores falls within 3 standard deviations of the mean?
5. A school principal wants to see which subject the 845 students in his school liked best.Which choice best represents a parameter?
6. What is a population?
7. If every individual in a population has the same chance of being included in a sample, the sample is a(n) _____ sample.
8. The most frequently occurring score(s) in a distribution.
9. Given the following data:1, 2, 3, 4, 5, 6, 7, 8, 9, 10
10. Temperature can be classified into this level of measurement.
11. The mean of a, b, c, d and e is 28. If the mean of a, c and e is 24, then mean of b and d is
12. Statistics in singular sense includes
13. It occurs when data are obtained erroneously or samples are biased.
14. Process of extracting relevant information from a set of data.
15. _____ is a person who buys goods and services for the satisfaction of his/her wants
16. The measure of closeness of the estimates to the actual value
17. It is the science of collecting, organizing, interpreting, and analyzing data. It is very important because it has many applications in the society.
18. What does "mode" mean?
19. Identify the sampling technique used:Students are classified according to major. Twenty students are selected from each major and asked how often they use the library.
20. Statistics which is concerned with a higher order of critical thinking and judgment.
21. A group of subjects selected from a population is a _____
22. What is the probability of getting the number 1 in a fair dice?
23. A characteristic about each individual element of a population or sample.
24. Statistics as a singular noun means:
25. What is the Median? 8, 13, 2, 4, 48
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