SAS Elementary Statistics Questions
(written at Notre Dame to cover material in Chapter 4 of SAS System for Elementary Statistical Analysis)
Click on the answer you think is most nearly correct.
1. Which of the following statements is not true:
Character variables have values containing characters only. Interval measurements are numeric and have an inherent ordering. Ratio measurements are numeric and differences between values are important. A value of zero has no special meaning in ordinal measurements. A value of zero is meaningful for ratio measurements.
2. The color of an automobile is a good example of:
a nominal measure. an ordinal measure. a ratio measure. an interval measure. a cardinal measure.
3. Which of the following statements is not true:
Mean is the geometric average. Variance is the most commonly used measure of dispersion or variability about the mean. Standard deviation is always the square root of variance. In SAS the coefficient of variation is 100 times the standard deviation divided by the mean. The standard error of the sample mean is the standard deviation divided by the square root of the sample size.
4. Which of the following statements is not true:
Range is the difference between the largest and the smallest values. Mode is the data value with the largest associated number of observations. The first quartile is larger than 75% of the values. The 50th percentile is the median. The 0th percentile is the smallest value.
5. The Kelvin scale for measuring temperature is based on absolute zero and is an example of: