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Class 11 Mathematics Chapter 15 Statistics Quiz 7 (60 MCQs)

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1. The average of a data set, found by adding all numbers together and then dividing the sum of the numbers by the number of numbers
2. Determine whether the data set is a population of a sample:The cholesterol levels of 20 patients in a hospital with 100 patients.
3. The average salary of all assembly-line employees at a certain car manufacturer is $ 33, 000.
4. Per Liter Price today at petrol pumps today is example of:
5. The set of all possible outcomes of a situation or experiment
6. What is the primary purpose of using statistics in research?
7. Statistical Methods is an important component of statistics that works closely with both the descriptive and inferential aspects by ..... data.
8. What is the range of the following data set? 133, 140, 98, 98, 140, 119, 119
9. A characteristic about each individual element of a population or sample.
10. Which software is required for the course?
11. A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys, so she randomly selects five students from the class to survey, paying no attention to their gender.This is a form of:
12. It deals with the techniques used in generalizing from samples to populations, performing estimations and hypothesis tests determining relationships among variables, and making predictions
13. It is a branch of Mathematics that deals with the collection, organization, presentation, analysis and interpretation of data.
14. It is the description of what is being studied in the sample or population.
15. The probability of getting a 4 when rolling a die.
16. Bio statistics can be used for
17. Find the mean:23, 14, 12, 13, 38
18. Which situation illustrates permutation?
19. The median of the data 17, 2, 7, 27, 15, 5, 14, 8, 10, 24, 48, 10, 8, 7, 18, 28 is
20. A branch of mathematics dealing with the collection, analysis, interpretation, and presentation of masses of numerical data.
21. What is not a usual question to ask when conducting statistical analysis?
22. A variable (or response variable) is
23. What is the value of x in the set {40, 70, x, 30} if the mean and the median of the set are equal?
24. The Math teacher could put the names of all the students in a box, mix the names without looking.This describes what kind of sampling?
25. Which strategy is used for discussing the lesson?
26. Variable whose values can be expressed numerically are called
27. Which of the following is a method of gathering statistical data?
28. Definition:As one variable increases, the other decreases.
29. Who is the instructor for the Business Mathematics and Statistics course?
30. What is a characteristic of a sample?
31. Standard deviation of first 50 natural numbers
32. Suppose a survey of 584 women in the U.S. found that more than 65% are the primary investor in their household. Choose the best inference.
33. Which of the following best describes the union of two events in probability?
34. One of the given is not a type of Classification
35. What is the formula for calculating the median of a set of numbers?
36. It is also known as registration. Data are collected for each and every element/unit of the population.
37. Number of women among 10 newly hired teachers is an example of what type of random variable?
38. What is correlation analysis used for?
39. Test for the strength of the association between two categorical variables:
40. What is the range of a set of numbers?
41. Which among the statements is not an example of statistical question?
42. One of the application that concerns about Human population, to see the status of birth and death rate
43. The third proportional to 16 and 64
44. A type of data where zero is arbitrary. Example:Temperature in Fahrenheit and Celcius.
45. Assume 10 students got the following test scores:58, 98, 81, 59, 67, 81, 94, 84, 46, 32. Find the median of the scores.
46. Science that consists of collecting, organizing, analyzing and interpreting data
47. Miss Grace has just given a math exam and wants to calculate the 'range' of performance of her students. What must she do?
48. It is a type of data that can be expressed in numbers.
49. Definition:How often a number occurs.
50. Based on the iris data, which species is associated with a petal width of 0.2 and a petal length of 1.3?
51. What will be the mean if the $\sigma$fX is equal to 873 and n is equal to 53
52. A quantitative variable that can assume an uncountable number of values. Intuitively, a continuous variable can assume any value along a line interval, including every possible value between any two values
53. What is the significance of time series analysis?
54. What is the other name of supplementary angles?
55. Number that describes a sample
56. Numerical summary of the sample which can be used to make inferences about parameters.
57. Calcule o valor da mediana da seguinte amostra de dados:(32, 27, 15, 44, 15, 32).
58. If all observations 3, 7, 9, 18, 21, 32 are multipiied by 3, then the new mean is .....
59. A value that attempts to describe a set of data by identifying the central position of the data set, such as the mean, median, and mode.
60. Choose the statistical question:
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