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Anonymous users2024-02-06The formative assessment of the principles of statistical knowledge and bureau learning is as follows:
1. Solution: (1) Consumer Goods Retail Sales Index = Consumer Goods Retail Sales Index * Consumer Goods Retail Sales ** Index.
So: Urban Retail Sales Index = 100%+.
The retail sales index of urban consumer goods = 100% + 13% = 113%.
Retail sales of rural consumer goods refer to the number of handicaps = 100%+.
Rural Consumer Goods Retail Sales Index = 100%+.
That is: urban and rural consumer goods are respectively and.
2) Production cost index = output index * product cost index.
That is, the cost of products in 2003 was lower than in 2002.
Note: This question is incorrect: the correct one should be: production in 2003 increased compared to 2002.
2. Product name Output Unit cost (yuan) Total cost.
10,000 1,200 yuan 10 8 10,000 9600 12,000.
B 10,000 5000 5000 4 20000 22500 20000.
C10,000 1500 2000 8 7 12000 14000 16000.
Total 42000 46100 48000.
Answer: 1. The total unit cost index of the three products is.
2. The total output index of the three products is.
3. The total cost index is that the total cost in the calculation period is higher than the sales increase in the base period, which is formed due to the combined effect of two factors: output growth and unit cost reduction.
Due to the reduction of the unit cost of the three products, the total cost was reduced by 19 million yuan, and the total cost was increased by 60 million yuan due to the production brightening and sensitization, and the combined effect of the two factors resulted in a net increase of 41 million yuan in the total cost.
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Anonymous users2024-02-05Summary. Statistics Chapter 8 Hypothesis Testing Practice Assignment Lv Yaya Solution: Known:, 2=,n=9, = Two-sided test Small sample, known, Use z-statistic : =, 2=, look up the table:
Calculation of test statistic: = It is known that the carbon content of an ironmaking plant obeys a normal distribution n(,, and now 9 furnaces of molten iron have been determined, and the average carbon content is . If there is no change in the estimated variance, can it be assumed that the average carbon content of the molten iron produced now is?
Decision: z-value falls into the acceptance domain, accepted at the significant level of =. Conclusion:
There is evidence that there is no significant difference in the average carbon content of the iron produced now compared with the previous one, and it can be assumed that the average carbon content of the iron produced now is. An element that requires a service life of not less than 700 hours. Thirty-six pieces were randomly selected from a batch of these components, and their average life was measured to be 680
Statistics Chapter 8 Hypothesis Testing Practice Assignment Lv Yaya Solution: Known: =,, 2=,n=9, = Two-sided test Small sample, known, with z-statistic :
=, 2=, look up the table: = Calculate the test statistic:
It is known that the carbon content of an ironmaking plant obeys a normal distribution n(,, and now 9 furnaces of molten iron have been determined, and the average carbon content is . If there is no change in the estimated variance, can it be assumed that the average carbon content of the molten iron produced now is? Decision-making:
The z-value falls into the acceptance domain, and the closure rot is accepted at the significant level of = . Conclusion: There is evidence that there is no significant difference between the average carbon content of the iron produced now and the previous one, and it can be considered that the average carbon content of the iron produced now is.
An element that requires a die slip whose service life is not less than 700 hours. Thirty-six pieces were randomly selected from a batch of these components, and their average life was measured to be 680
Is this the answer to my question?
Yes. It's the two blanks in question 10, and I don't know.
The null hypothesis is accepted, and the alternative hypothesis is rejected.
Okay thank you.
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Anonymous users2024-02-042018 Statistics and Statistical Law Fundamentals Preparation Refinement Questions and Answers (9).
1.In the time series, the values of each indicator can be added to ().
a.Absolute number time series.
b.Period sequence.
c.Point-in-time sequence.
d.Relative or average time series.
2.Levels of development in the time series ().
a.It can only be an absolute number.
b.It can only be relative.
c.It can only be an average.
d.It can be an absolute number, a relative number, or an average.
3.The inventory data of an enterprise in the second half of 2004 is shown in the following table, and its average inventory is ().
4.According to the provisions of the "Statistics Law", the leaders of localities, departments, and units who falsify statistical data are mainly taken ().
a.Administrative sanctions.
b.Circulate criticism.
c.Penalty. d.Administrative penalties.
5.The Statistics Law stipulates that the statistical violation of the law that bears the responsibility for the destruction of the people's backbone refers to the act of ().
a.Use statistical surveys to steal state secrets.
b.The use of statistical surveys harms the public interest.
c.Unauthorized production and issuance of statistical questionnaires.
d.Leaking private or family individual survey data or trade secrets of statistical survey subjects.
6.The indicator that illustrates the overall rate of development of the phenomenon over a longer period of time is ()aMonth-on-month growth rate.
b.Average rate of development.
c.Set the base for the speed of development.
d.Fixed-base growth rate.
7.The average rate of development is ().
a.The arithmetic mean of the rate of development of a fixed base.
b.The arithmetic mean of the rate of development of the ring ring.
c.The geometric mean of the product of the month-on-month development rate.
d.Growth rate plus 100%.
8.The absolute payout value for a 1% increase is ().
a.Horizontal indicators.
b.Speed metrics.
c.An indicator of speed combined with level.
d.All three of the above are acceptable.
9.The time series is ().
a.A series of statistical indicators are arranged together.
b.It is formed by arranging similar indicators.
c.The statistical index values of the same space and different times are arranged in chronological order.
d.It is formed by arranging the values of statistical indicators in the same space and at different times.
10.The following are () that belong to the point-in-time sequence.
a.The industrial added value of a place over the years.
b.The industrial labor productivity of a place over the years.
c.The total urban population of a place at the end of the calendar year.
d.The total import and export value of industrial products in a certain place over the years.
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