The number of vibrations per second determines the frequency of the sound which is measured by which unit?
A) decibel
B) hertz (Hz)
C) watt
D) volts
B
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What is the sampling procedure called when initial respondents are selected using probability methods, then additional participants are added using information provided by the initial respondents?
A. Survey B. Randomized C. Additional sampling D. Snowball
A number of studies have found that the quality of child care impacts children’s social development
Indicate whether this statement is true or false.
One of the eligibility criteria for deaf-blindness is that the student's disability has an adverse impact on the student's educational performance when the student is at the age of eligibility for kindergarten through age 21, or has an adverse impact on the student's developmental progress when the student is age three through kindergarten
a. True b. False
Which of the following statements is true about spending by major functions?
a. Payment on school construction bonds takes up half the school budget. b. The category of instruction represents three fifths of the budget. c. The principal’s salary comes out of the instructional budget, since he or she is the instructional leader of the school. d. Transportation of students is costlier than teachers’ salaries.