Question: The theory of spontaneous generation held that:
a. Life arises spontaneously from lifeless matter.
b. Life arises spontaneously from sexual reproduction.
c. Life arises spontaneously from various forms of vegetable nutrients.
d. Life arises only from other forms of life.
e. Life arises spontaneously from the action of an electric spark on certain amino acids.
Answer: a. Life arises spontaneously from lifeless matter.
Question: Given Data Set 1C, what is the mean age of the houses?
a. 3 years.
b. 4.6 years.
c. 5 years.
d. 4 years.
e. 5.7 years.
Answer: c. 5 years.
Question: Given Data Set 1A, what is the modal length of service?
a. 4 years.
b. 6 years.
c. 5 years.
d. 3 years.
e. 3.5 years.
Answer: b. 6 years.
Question: What is the variance for Data Set 2B?
a. √2
b. 1.5
c. 2.5
d. 1
e. 2
Answer: e. 2
Question: For Data Set 2B, what is the standard deviation?
a. √2
b. 1
c. 1.3
d. 2
e. √1.5
Answer: a. √2
Question: Suppose an implication derived from a hypothesis turns out to be false. This occurrence:
a. Indicates that the hypothesis was derived inductively.
b. Shows that the hypothesis should never have been formulated.
c. Proves that the hypothesis is grounded in defective reasoning.
d. Indicates that the hypothesis was derived deductively.
e. Provides evidence that the hypothesis is false.
Answer: e. Provides evidence that the hypothesis is false.
Question: Given Data Set 1A, what is the median length of service?
a. 3 years.
b. 3.5 years.
c. 2 years.
d. 3 years.
e. 6 years.
Answer: a. 3 years.
Question: Suppose that the average price of a piece of jewelry at Henry’s Jewelers is $200, and Mr. Smith wants to spend approximately that much for his wife’s birthday gift. Under what circumstances can Mr. Smith be reasonably assured of a selection of jewelry in his price range?
a. The average is a mean.
b. The jeweler has a reputation for selling quality merchandise.
c. The average is a modal average.
d. The average is a median.
e. The pieces of jewelry are reasonably priced.
Answer: d. The average is a median.
Question: The key problem underlying the discovery of radium was:
a. Why certain isotopes of thorium are radioactive.
b. Why uranium has the power to darken photographic plates.
c. Why pitchblende emits rays that are stronger than rays emitted by pure uranium.
d. Why rays emitted by thorium are stronger than rays emitted by uranium.
e. Why X-rays are stronger than rays emitted by pure uranium.
Answer: c. Why pitchblende emits rays that are stronger than rays emitted by pure uranium.
Question: One way of exaggerating the apparent message conveyed by a bar graph is by:
a. Altering the vertical scale while leaving the horizontal scale as is.
b. Altering both the horizontal scale and the vertical scale by the same amount.
c. Altering the horizontal scale while leaving the vertical scale as is.
d. Narrowing the width of the bars.
e. Printing the bars in different colors.
Answer: a. Altering the vertical scale while leaving the horizontal scale as is.
Question: If the standard deviation of a set of data is relatively small, then:
a. The sample does not accurately represent the population.
b. The standard deviation diverges from the variance.
c. The data tend to be spread out from the median point.
d. The population from which the data are extracted tends to be large.
e. Most of the data fall close to the mean point.
Answer: e. Most of the data fall close to the mean point.
Question: In general, the larger a sample is:
a. The smaller the standard deviation becomes.
b. The more likely it is that it will be biased.
c. The more difficult it becomes to avoid atypical cases.
d. The greater the standard deviation becomes.
e. The more closely it represents the population.
Answer: e. The more closely it represents the population.
Question: One of the problems with the Literary Digest poll taken prior to the 1936 presidential election was:
a. Many of the people in the population could not afford a telephone.
b. The sample size was too small.
c. The population was too large.
d. The responses were biased because of the way the questions were phrased.
e. Most people were not at home at the time the calls were made.
Answer: a. Many of the people in the population could not afford a telephone.
Question: Given Data Set 1B, what is the mean age of the cars?
a. 2 years.
b. 2.5 years.
c. 3 years.
d. 4 years.
e. 3.5 years.
Answer: c. 3 years.
Question: What is the variance for Data Set 2A?
a. 1
b. 2
c. √1.5
d. 1.5
e. 2.5
Answer: d. 1.5