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Statistics Quiz 23 (25 MCQs)

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1. What is the mean of test scores? \{70, 70, 80, 85, 85, 90, 95, 95, 100, 100\}
2. It is the complete set of all the elements that will be studied
3. Data that can be counted or measured.
4. Which of the following involves group-by-group selection of samples?
5. _____ statistics consists of generalizing from samples to populations, performing estimations and hypothesis tests, determining relationships among variables, and making predictions.
6. Katie earned 84, 92, 84, 75 and 70 on her first 5 tests. What is the minimum grade Katie needs to earn on the next test to have a mean of 84?
7. The average value (statistic) is equal to the parameter
8. What is the range of the following data set:1, 1, 3, 5, 5, 6
9. The main purpose of descriptive statistics is to:
10. An example of a categorical and ordinal variable would be _____
11. Statistics in plural sense deals with
12. Which of the following method is used when an investigator collects the required information with the informant
13. When the temperature is 0 degree celcius, which of the following is not true?
14. Mrs. Trahan samples her class by selecting all students sitting at group 1 and group 5 in her classroom. This sampling technique is called?
15. Distance of difference between the least and greatest numbers in a data set.
16. Sample is different from population because _____
17. As part of a 6th grade statistics project, the teacher brings a candy jar full of gumballs (red & green). The assignment is to estimate the proportion of red gumballs in the jar. Suppose one of the students draws 25 gumballs from the jar:8 are red, 17 are green. What is the POPULATION?
18. The entire group being studied.
19. The value appearing at the center of a sorted version of a list, or the mean of the two central values.
20. Farmer Joe randomly picks 100 trees using a random number generator to estimate the number of apples produced by his apple trees. This is _____ sampling.
21. Which statistical tool is used to compare the means of more than two groups
22. This is an attribute that describes an entity such as a person, place or a thing and the value that variable take may vary from one entity to another.
23. Your test scores are 87, 86, 89, and 88. You have one more test in the marking period. * You want your average to be a 90. What is the lowest score you must get on your last test?
24. Statistics is defined in terms of numerical data in
25. Why is a sample of 1000 people better than a sample of 100 people?
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