a census reports that the mean retirement age is 68.3 years. in a random sample, the mean retirement age is…
a census reports that the mean retirement age is 68.3 years. in a random sample, the mean retirement age is 65.8 years. what is the mean of 68.3 years?\na. a parameter\nb. a variable\nc. a statistic\nd. a sample
Answer
Brief Explanations:
A parameter is a numerical characteristic of a population. Here, the mean retirement - age from the census (a complete count of the population) is 68.3 years. A variable is a characteristic that can take on different values. A statistic is a numerical characteristic of a sample. A sample is a subset of the population. Since 68.3 years is based on the entire population (from the census), it is a parameter.
Answer:
A. a parameter