16. The purpose of education and psychological experiments is to answer questions and estimate the effect.

17. The mean of binomial distribution is _ _ _ _ _ _ _ _.

18. The transformation relationship between the standard normal distribution Z ~ n (0, 1) and the general normal distribution X ~ n (μ, σ 2) is _ _ _ _ _ _ _ _.

19. The main function of variance analysis is to determine whether the experimental factors have _ _ _ _ _ _ on the response variables.

20. Giving different experimental contents in blocks is called _ _ _ _ _ _ _ _.

2 1. In experimental design, the purpose of repetition principle is to estimate and reduce _ _ _ _ _ _.

22. A set of reaction time data is 12, 10, 8, 9, 13, 15, where the number is _ _ _ _ _ _ _.

23. There are four choices of 10 multiple-choice questions, and the probability that the candidates get full marks by random guess is _ _ _ _ _.

24. The hypothesis test of the overall distribution is also called _ _ _ _ _ of the overall distribution.

25. The statistic of one-way rank variance analysis test method is _ _ _ _ _ _.

Three. Noun explanation (this big title is ***4 small questions, 3 points for each small question, *** 12 points)

26. Random phenomenon

27. Bar chart

The way

29. Relevant scatter plot

Four, short answer questions (this big question ***3 small questions, 5 points for each small question, *** 15 points)

30. Briefly describe the steps of N-K method.

3 1. Briefly describe the advantages and disadvantages of arithmetic average.

32. Briefly describe the meaning of sampling distribution.

33. In a study, 30 samples were taken from grade one students, and their Chinese test scores were as follows:

60,7 1,63,58,50,75,64,73,72,64,

52,65,67,76,72,70,58,50,80,5 1,

79,8 1,77,69,67,6 1,48,50,54,55。

Ask them for an average score in Chinese.

34. The average score and standard deviation of Chinese and mathematics subjects of candidates in a university are shown in the table below. Try to compare which subjects of the candidates in this school are more dispersed.

Subject China Mathematics

The average score is 63.75 standard deviation 1 1 12.

35. The illusion experimental data of five subjects are as follows, and the average difference is obtained.

Subject 1 2 3 4 5

Number of illusions (unit: ms)1618 20 2217

36. After taking the national unified examination, I learned that the candidates' scores obey the normal distribution. 153 candidates were selected from a province, with an average score of 57.4 1, and the total standard deviation of the province was 5.77. B province selected 686 candidates, with an average score of 55.95. The total standard deviation of this province is 5. 17. Find out whether there is a significant difference in the average score between the two provinces in this exam (take α=0.0 1).