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Statistics Quiz 20 (25 MCQs)

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1. In order to use samples to estimate something from the population, the sample should be _____ the population.
2. Find the mode of 25, 95, 24, 44, 51, 95, 25, 47, 95, 99, 95
3. Statistics is used by
4. What is a sample?
5. First quartile is also known as
6. What does a quartile mean?
7. Data obtained from counting
8. Brian has an aquarium with eleven fish. The lengths of the fish in centimeters are listed. What is the mode of these lengths? 2, 5, 3, 9, 4, 2, 8, 3, 9, 2, 8
9. Your friend's score on an intelligence test
10. In this measurement, zero is just another point in the scale.
11. If random selection occurred only among male students that had an excellent academic background, what type of sampling is this?
12. A student measures the weight of every individual in his batch with a total of 120 students. He only needs a specific data on a group of students. This means that he will get the _____
13. There are 700 men, 800 women and 500 children in a town. A sample of 80 people is required with a stratified sample. How would the sample be composed?
14. A school principal wants to offer an after-school club setting. She decided to survey 300 students about this. Which word best describes the group of 300 students?
15. Let P be the probability of an event. P =-1 implies
16. Which of the following is an example of continuous data?
17. Which among the statements is NOT an example of statistical question?
18. It is characterized because the differences between two data values is significant.
19. Which of the following is positional average
20. What is the mean of a standard normal distribution?
21. Which of the following statements are true? I. All variable can be classified as quantitative or categorical variables.II. Categorical variables can be continuous variable.III. Quantitative variables can be discrete variables.
22. This is a tool that researchers use to collect needed data.
23. Scientists track a flock of birds for three years to learn their migratory patterns.
24. Which level of measurement provides the least sensitive analysis?
25. The data below shows the number of hours boys and girls spent studying for a test.Boys:\{2, 1, 3, 1, 2, 2\}Girls:\{4, 1, 3, 2, 2, 4\}What is the difference in the interquartile range between the girls and boys?
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