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A population in Statistics means :‎
1. A collection of all men and women
2. A collection of all subjects or objects of interest
3. A collection of all people living in a country
A sample in statistics means:‎
1. A portion of the people selected from the population of a country
2. A portion of the people selected from the population of an area
3. A portion of the population of interest.
Indicate which of the following variables a brand of coffee is:‎
1. Qualitative
2. Discrete quantitative
3. Contentious quantitative
The value of the middle term in a ranked data set is called the:
1. mean
2. median
3. mode
4. none of these
Which of the following summary measures is/are influenced by extreme values?‎
1. mean
2. median
3. mode
4. range
Which of the following summary measures can be calculated for qualitative data?
1. mean
2. median
3. mode
4. range
Which of the following can have more than one value?
1. mean
2. median
3. mode
4. none of these
Which of the following is the mean of the squared deviations of x values from the mean? ‎
1. standard deviation
2. population variance
3. sample variance
4. mean deviation
Which of the following is given by the difference between the largest and the smallest values of a data set?‎
1. variance
2. range
3. mean
4. median
The values of the variance and standard deviation are:‎
1. never negative
2. always positive
3. never zero
4. none of these
A summary measure calculated for the population data is called:
1. a population parameter
2. a sample statistic
3. an outlier
4. a sample mean
A summary measure calculated for the sample data is called:
1. a population parameter
2. a sample statistic
3. a boxplot
4. mean plot
Chebychev’s theorem can be applied to:
1. any distribution
2. bell-shaped distribution only
3. skewed distributions only
4. none of these
The empirical rule can be applied to:
1. any distribution
2. bell-shaped distributions only
3. skewed distributions only
4. non-skewed distribution
The first quartile is a value in a ranked data set such that:
1. about 75% of the values are smaller and about 25% are larger than this value
2. about 50% of the values are smaller and about 50% are larger than this value
3. about 25% of the values are smaller and about 75% are larger than this value
4. about 55 % of the values are smaller and about 75% are larger than this value

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