A multiple-choice quiz
by crisw.
Estimated time: 4 mins.

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Sep 28 2023
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Sep 21 2023 : Guest 112: 8/10

Sep 20 2023 : Guest 222: 7/10

Sep 19 2023 : Guest 120: 6/10

Sep 19 2023 : Guest 110: 8/10

Score Distribution

Quiz Answer Key and Fun Facts

Answer:
**7.31**

The mean is the average, determined by adding all numbers of the sequence and then dividing by the number of items in the sequence. The mean is sensitive to extreme values in the series- these can 'distort' the average. This is why 'mean income' would be a misleading statistic- you could have hundreds of poor people and just a few very rich people, and the mean income would seem to be rather high, as the large salaries of the rich would unbalance it.

The mean is the average, determined by adding all numbers of the sequence and then dividing by the number of items in the sequence. The mean is sensitive to extreme values in the series- these can 'distort' the average. This is why 'mean income' would be a misleading statistic- you could have hundreds of poor people and just a few very rich people, and the mean income would seem to be rather high, as the large salaries of the rich would unbalance it.

Answer:
**5**

The median is the middle score (or the average of the two scores closest to the middle if there is an even number of data points.) Medians are less influenced by extreme scores and thus most common statistics (income, house prices, etc.) use a median score.

The median is the middle score (or the average of the two scores closest to the middle if there is an even number of data points.) Medians are less influenced by extreme scores and thus most common statistics (income, house prices, etc.) use a median score.

Answer:
**2**

The mode is the most common score.

The mode is the most common score.

Answer:
**16**

The range is the highest value minus the lowest value, and shows you the 'spread' of the data.

The range is the highest value minus the lowest value, and shows you the 'spread' of the data.

Answer:
**Bell-shaped**

The graph will be bell-shaped, with a large bulge of 'average' heights and smaller 'tails' of people farther away from the mean- midgets and basketball players.

The graph will be bell-shaped, with a large bulge of 'average' heights and smaller 'tails' of people farther away from the mean- midgets and basketball players.

Answer:
**Standard deviation**

The standard deviation lets us know how a data sample is distributed around the sample mean. A data set with a small standard deviation has all data points relatively close to the mean, a sample with a large standard deviation is more spread out. In a normal distribution, about 68 percent of scores are within one standard deviation of the mean, about 95 percent are within two standard deviations of the mean, and 99.7 percent are within 3 standard deviations of the mean.

The standard deviation lets us know how a data sample is distributed around the sample mean. A data set with a small standard deviation has all data points relatively close to the mean, a sample with a large standard deviation is more spread out. In a normal distribution, about 68 percent of scores are within one standard deviation of the mean, about 95 percent are within two standard deviations of the mean, and 99.7 percent are within 3 standard deviations of the mean.

Answer:
**Determining if a small set of pieces of oak firewood burn longer than pine firewood**

The t-test determines whether two sets of scores are significantly different. It can be used with small samples and even if the standard deviation is not known. As sample sizes increase, the measurement becomes more accurate.

The t-test determines whether two sets of scores are significantly different. It can be used with small samples and even if the standard deviation is not known. As sample sizes increase, the measurement becomes more accurate.

Answer:
**Determining whether the weight of all male golden eagles in a population is statistically different from that of female eagles**

The z-test also determines whether two sets of scores are significantly different. However, the z test can only be used when a population is known to have a normal distribution and the standard deviation is known. In this case, all weights are known, so the distribution and standard deviations can be checked. Weights of all members of a population is a normally-distributed statistic.

The z test is also used when population samples are large.

The z-test also determines whether two sets of scores are significantly different. However, the z test can only be used when a population is known to have a normal distribution and the standard deviation is known. In this case, all weights are known, so the distribution and standard deviations can be checked. Weights of all members of a population is a normally-distributed statistic.

The z test is also used when population samples are large.

Answer:
**Chi-square test**

The best known chi-square test was developed by Karl Pearson in the early twentieth century and is used for testing statistical hypotheses. Truth tables are used in logic and logarithms are associated with mathematics. Slide rules, superseded by calculators, were developed from logarithms as a calculation method, particularly used by engineers.

The best known chi-square test was developed by Karl Pearson in the early twentieth century and is used for testing statistical hypotheses. Truth tables are used in logic and logarithms are associated with mathematics. Slide rules, superseded by calculators, were developed from logarithms as a calculation method, particularly used by engineers.

Answer:
**Determining which of several medicines has the greatest effect on cell growth**

ANOVA -analysis of variance- is used to determine whether significant differences exist between multiple sets of data.

ANOVA -analysis of variance- is used to determine whether significant differences exist between multiple sets of data.

This quiz was reviewed by FunTrivia editor rossian before going online.

Any errors found in FunTrivia content are routinely corrected through our feedback system.

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Referenced Topics

People
Science
By The Numbers
Math
Statistics and Probability
Sequences
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