The time between when sound arrives directly from the stage and when the first reflection arrives is called the _____.
A) intimacy time
B) spaciousness factor
C) bass ratio
D) reverberation time
In a positively skewed sample,
a. the mean is greater than the median.
b. the mode is greater than the median.
c. the mode and the median are equal.
d. the mode and the mean are equal.
The anecdote about the construction of New York's Philharmonic Hall demonstrates that _____.
A) an ideal reverberation time does not always predict good acoustics
B) an ideal reverberation time always predicts good acoustics
C) musicians should design symphony halls
D) the MLD is more important than the ILD in architectural acoustics
The measure of central tendency that is most effected by outliers is the
a. mean.
b. median.
c. mode.
d. variance.
The time that it takes a sound to decrease to _____ of its original level is the reverberation time.
A) 1/1000th
B) 1/100th
C) 1/10th
D) 1/5th
Which of the following might be best used to illustrate the gender composition (number of men versus women) at a university?
a. A normal curve
b. A chi-square statistic
c. A frequency distribution
d. A stem and leaf plot
The ideal reverberation time for symphony halls is _____.
A) 50 milliseconds
B) 500 milliseconds
C) 2 seconds
D) 7 seconds
Sampling bias is most likely to occur when
a. the representativeness of the sample is high.
b. there is no sampling frame available.
c. participants guess the research hypothesis.
d. the researcher is a member of the population.
The major concern involved in architectural acoustics is how _____.
A) indirect sound changes sound quality
B) indirect sound affects VAS
C) direct sound changes sound quality
D) direct sound affects VAS
In a study investigating alcohol use and mood disorders on college campuses, Pam separates the population into different ethnic groups and then uses a computer program to pick ten names at random for each ethnic group. Which sampling technique is Pam using?
a. Response sampling
b. Simple random sampling
c. Snowball sampling
d. Stratified random sampling
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