What classification of data is "race" such as White, African American, Latino, etc.

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QUESTION 2

What classification of data is "race" such as White, African American, Latino, etc. ?
Answer
a.Nominal
b.Ratio
QUESTION 3

What classification of data is "amount of cash" in the cash drawer?
Answer
a.Ordinal
b.Ratio

QUESTION 4

Which of the descriptions listed below best describes ordinal data?
Answer
a.Difference in kind with ranking
b.Difference in kind, rank order, scale of equal units. 

QUESTION 5

For the standard normal distribution, what percent of the data falls within plus or minus three standard deviations of the mean?
Answer
a.68.34%
b.99.73%

QUESTION 6

If the mean of a normal distribution is 12 and the standard deviation is 2, then the mean plus 2 standard deviations would be what number?
Answer
a.10
b.16

QUESTION 7

If the mean of a normal distribution is 12 and the standard deviation is 2, then the Z score for the value 15 would be:
Answer
a.+1.5
b.-3

QUESTION 8

If the mean of a normal distribution is 12 and the standard deviation is 2, then what percent of the standard normal curve would fall within plus or minus one standard deviation from the mean?
Answer
a.68.34%
b.95.45%

QUESTION 9

A "flat" distribution would be know to have
Answer
a.lowskewness
b.low kurtosis

QUESTION 10

A possible reason for a distribution being "flat" would be
Answer
a. the mixing of two populations
b. a few extremely high outliers

QUESTION 11

The Central Limit Theorem is the fundamental theorem of statistics. If the DISTRIBUTION OF THE POPULATION is uniformly distributed with a mean of 50 and a standard deviation of 4 and samples of size 16 are taken from the population, then the DISTRIBUTION OF SAMPLE MEANS HAS: 
Answer
a. a uniform distribution
b. a normal distribution

QUESTION 12

The Central Limit Theorem is the fundamental theorem of statistics. If the DISTRIBUTION OF THE POPULATION is uniformly distributed with a mean of 50 and a standard deviation of 4 and samples of size 16 are taken from the population, then the DISTRIBUTION OF SAMPLE MEANS has:
Answer
a. a mean of 50
b. a mean of 4

QUESTION 13

The Central Limit Theorem is the fundamental theorem of statistics. If the DISTRIBUTION OF THE POPULATION is uniformly distributed with a mean of 50 and a standard deviation of 4 and samples of size 16 are taken from the population, then the DISTRIBUTION OF SAMPLE MEANS has:
Answer
a. a standard error (deviation) of 1
b. a standard error (deviation) of 16

QUESTION 14

The standard error of the mean is equal to the standard deviation of the population DIVIDED by the square root of the sample size n. If one wishes to reduce the standard error, what option is used?
Answer
a. Increase the mean of the distribution
b. Increase the sample size

QUESTION 15

A minor outlier has about a ___% chance of being "random" variation. 

Answer
a. 1%
b. .01%

QUESTION 16

A statistical outlier can be found by : 
Answer
a. Viewing the boxplot and noting a "*" on the graph

b. Viewing the normal distribution and finding a value close to the mean.


QUESTION 17

A cereal company claims that their boxes contain at least 16 ounces on the average. The null hypothesis for the test would be:
Answer
a. The average weight of the cereal boxes is equal to 16 ounces
b. The average weigh of the cereal boxes is greater than 16 ounces.

QUESTION 18

A cereal company claims that their boxes contain at least 16 ounces on the average. The alternate hypothesis for the test would be:
Answer
a. The average weight of the cereal boxes is equal to 16 ounces.
b. The average weight of the cereal boxes is greater than 16 ounces.

QUESTION 19

A cereal company claims that their boxes contain at lest 16 ounces on the average. A p value of .0044 was found for the test. What would be the appropriate conclusion for the test?
Answer
a. Accept Ho: I am at least 95% sure thant the mean weight is 16 ounces.
b. Accept Ha: I am at least 95% sure that the mean weight is greater than 16 ounces.

QUESTION 20

An instructor claimed that the average GPA of women at UTM was different from the average GPA of the mean. If the p value of the test was 0.115, what is the conclusion to the test?
Answer
a. Accpet Ho: I am not at least 95% sure that the averages are equal.
b. Accept Ho: I am not at least 95% sure that the averages are different (thus, although not exactly the same, they might be assumed to be close to equal).

QUESTION 21

A RANDOM sample occurs when each item in the population has an equal chance of being selected.
Answer
True
False

QUESTION 22

A REPRESENTATIVE sample of the population occurs when the sample taken is not an idenicalmicrocosim of the population.
Answer
True
False

QUESTION 23

The null hypothesis is always established as a "different from" hypothesis. 
Answer
True
False

QUESTION 24

A low p-value (that is, less than 5%) indicates that the null hypothesis is accepted. 
Answer
True
False

QUESTION 25

Sampling error is a term used to describe estimation errors due to random sampling.
Answer
True
False

QUESTION 26

A kurtosis figure of much greater than 0 would indicate a "flat distribution". 
Answer
True
False

QUESTION 27

The Pareto principle is used to describe the mound shaped character of the normal distribution.
Answer
True
False

QUESTION 28

The Central Limit Theorem guarantees that the distribution of sample means will be normally distributed when samples of an increasing size n are taken from the population. 
Answer
True
False

QUESTION 29

Based on the Central Limit Theorem, the distribution of sample means approaches a normal distribution as the standard deviation increases. 
Answer
True
False

QUESTION 30

Random sampling is the basic foundation for statistical sampling (and inference) and guarantees that forces not understood will be average out in the data.
Answer
True
False

QUESTION 31

Low p values (less than .05) generally indicate significant statistical factors or effects. 
Answer
True
False

QUESTION 32

Statistically significant results mean that the results could not be attributed solely to sampling error. 
Answer
True
False

QUESTION 33

An enumerative study is one based on numbers given by the randomnumber table. 
Answer
True
False

QUESTION 34

Enumerative sample confidence intervals are larger than analytical sample confidence intervals. 
Answer
True
False

QUESTION 35

If the alternate hypothesis is accepted, then one is 95% sure that the null hypothesis is true. 
Answer
True
False

    • 9 years ago
    What classification of data is "race" such as White, African American, Latino, etc.
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