Population Parameter vs Sample Statistic

Is the following a parameter or a statistic?

The average annual salary for 35 of a company's 1200 accountants is $68,000.

• parameter

• statistic

Is the following a parameter or a statistic?

In a survey of a sample of high school students, 43% said that their mother has taught them the most about managing money.

• parameter

• statistic

Is the following a parameter or a statistic?

In a survey of a sample of computer users, 8% said their computer had a malfunction that needed to be repaired by a service technician.

• parameter

• statistic

Is the following a parameter or a statistic?

In a recent survey of 1503 adults in the United States, 33% said they use both a landline and a cell phone.

• parameter

• statistic

At a particular college, 78% of all students are receiving some kind of financial aid.The school newspaper selects a random sample of 100 students and 72% of the respondents say they are receiving some sort of financial aid. Which of the following is true?

•  78% is a population and 72% is a sample.

• 72% is a population and 78% is a sample

• 78% is a parameter and 72% is a statistic

• 72% is a parameter and 78% is a statistic

A characteristic in a population is called a ________, whereas a characteristic in a sample is called a ________.

• population parameter; sample statistic

• sample statistic; population parameter

• sample parameter; population statistic

• population statistic; sample parameter

The manager of a fast-food restaurant wants to reduce the proportion of drive-through customers who have to wait for more than 2 minutes to receive their food once their order is placed.  Based on store records, 43% of all customers wait more than 2 minutes to receive their food. To try and reduce customer wait time, the manager hires an additional employee to assist with drive-through orders.  After a month, the manager takes a random sample of 60 drive-through customers and finds that 23 of them have to wait more than 2 minutes to receive their food. Parameter of Interest: The true population ________of drive-through customers who have to wait more than 2 minutes to receive their food.

• mean

• proportion

Identify the following numerical values:

....a study was investigating the average number of students per class at Meadow creek High School for a particular mini-semester. The administrator ran a report on all of the current classes for that mini-semester to determine the average class had 15 students.

• Parameter

• Statistic

The average annual salary for 35 of a company's 1200 accountants is $68,000.

• parameter

• statistic

In a survey of a sample of high school students, 43% said that their mother has taught them the most about managing money.

• parameter

• statistic