The
birth _____ is the number of births compared to the number of the
people. ()
A: speed
B: rate
C: frequency
D: percentage
birth _____ is the number of births compared to the number of the
people. ()
A: speed
B: rate
C: frequency
D: percentage
B
举一反三
- The number of people invited _______ fifty, but a number of them _______ absent for different reasons.[br][/br] [br][/br] A: were; was B: was; was C: was; were D: were; were
- The labor force is defined as the A: number of people over 16 years of age. B: number of people who are working. C: sum of employed and unemployed people. D: number of people in blue-collar jobs.
- One major obstacle to economic development is population growth. The populations of most developing countries grow at a rate much faster than that of in dustrialized countries. One reason for this growth is the high crude birth-rate—the number of live births per 1,000 people.（） A: to B: The populations C: that D: live births
- ___________ of<br/>the students in this school is 2000, and ____________ of them are<br/>girls. A: The number; first<br/>fourth B: The number; one fourth C: A number; one second D: A number;<br/>three quarters
- Which<br/>of the following is the Y-axis of the histogram?() A: frequency B: relative<br/>frequency C: relative<br/>frequency density D: values<br/>of a variable E: rate
内容
- 0
A．rateB．speedC．frequencyD．ratio A: rate B: speed C: frequency D: ratio
- 1
74（） A: rate B: speed C: frequency D: ratio
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If the number of people unemployed is 100, the number of people employed is 1000, and the working-age population is 1400, then the unemployment rate is A: 6.6 percent. B: 10 percent. C: 9.1 percent. D: 7.1 percent.
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5-10.As<br/>for the number of invariant points, the system can be divided into<br/>corresponding sub-triangles, that is, the number of sub-triangles is<br/>equal to the number of invariant points. ()
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In a data set, the number of observations will always be the same as<br/>the number of elements. ( <br/>)