题目内容
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Who granted the establishment of the East India Company？
A．King Henry VIII.
B．Queen Mary.
C．Queen Elizabeth I.
D．King James I.
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A、That
B、Those
C、What
D、Whether
together to establish the Environmental Protection Agency
(EPA) in response to the growing public demand for cleaner
water, air and land. Prior the establishment of 【S1】______
the EPA, the federal government is not structured to make 【S2】______
a coordinated attack on the pollutants that harm human health
and degrade the environment. The EPA was assigning the task 【S3】______
of repairing the damage already done to the natural environ
ment and to establish new criteria to guide Americans in making
a cleaner environment a reality.
Bom in the awake of elevated concern about environmental 【S4】______
mental pollution, the U.S. Environmental Protection Agency
opened its doors in downtown Washington, D.C., on December 2,
1970. EPA was established to consolidate in one agency the variety 【S5】______
of federal research, monitoring, standard-setting and
enforcement activity to ensure environmental protection. 【S6】______
EPA's mission is to protect human health and to safeguard
the naturally environment-air, water, and land-upon 【S7】______
which life depend. For more than 30 years, the EPA 【S8】______
has been working for a cleaner, healthier environment for the
American people.
From regulating auto emissions to ban the use of 【S9】______
DDT; from cleaning up toxic waste to protecting the ozone
layer; from increasing recycling to revitalizing inner-city brown-
fields, EPA's achievements have resulted in cleaner alr, purer
water, and well protected land. 【S10】______
【S1】
Descriptive statistics involves tabulating, depicting, and describing collections of data. These data may be either quantitative, such as measures of height, intelligence, or grade level—variables that are characterized by an underlying continuum or the data may represent qualitative variable, such as sex, college major, or personality type.
Large masses of data must generally undergo a process of summarization or reduction before they are comprehensible. Descriptive statistics is tool for describing or summarizing or reducing to comprehensible form. the properties of an otherwise unwieldy mass of data.
Inferential statistics is a formalized body of methods for solving another class of problems that present great difficulties for the unaided human mind. This general class of problems characteristically involves attempts to make predictions using a sample of observations. For example, a school superintendent wishes to determine the proportion of children in a large school system who come to school without breakfast, have been vaccinated for flu, or whatever. Having a little knowledge of statistics, the superintendent would know that it is unnecessary and inefficient to question each child; the proportion for the entire district could be estimated fairly accurately from a sample of as few as 100 children. Thus, the purpose of inferential statistics is to predict or estimate characteristics of a population from knowledge of the characteristics of only a sample of the population.
Which of the following are counting and describing associated with?
A．Descriptive statistics
B．Unknown variables
C．Qualitative changes
D．Inferential statistics
A、Thermodynamics
B、Quantum chemistry
C、Kinetics
D、Statistical mechanics
A、capture
B、arrest
C、captivity
D、capacity
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