Stats Center Spread and Shape

If a distribution is skewed to the right with no outliers, which expression is correct?

• mean < median

• mean approximately equal to median

• mean = median

• mean > median

• We can't tell without examining the data.

You record the age, marital status, and earned income of a sample of 1463 women. The number and type of variables you have recorded are

• 3 quantitative, 0 categorical

• 4 quantitative, 0 categorical

• 3 quantitative, 1 categorical

• 2 quantitative, 1 categorical

• 1 quantitative, 2 categorical

Realtors collect data in order to serve their clients more effectively. In a recent week, data on the age of all homes sold in a particular area were collected and displayed in this histogram. Which of the following could be the median age?

• 19 years

• 24 years

• 29 years

• 34 years

• 39 years

Which of the following best describes the shape of the distribution?

• SKEWED LEFT
• SKEWED RIGHT
• UNIFORM
• SYMMETRICAL

Which of the following best describes the shape of the distribution?

• SKEWED LEFT
• SKEWED RIGHT
• UNIFORM
• SYMMETRICAL

Which of the following best describes the shape of the distribution?

• SKEWED LEFT
• SKEWED RIGHT
• UNIFORM
• SYMMETRICAL

Which of the following best describes the shape of the distribution?

• SKEWED LEFT
• SKEWED RIGHT
• UNIFORM
• SYMMETRICAL

A survey was designed to study how business operations vary by size. Companies were classified as small, medium, or large. Questionnaires were sent to 200 randomly selected businesses of each size. Because not all questionnaires are returned, researchers decided to investigate the relationship between the response rate and the size of the business. What percent of all small companies receiving questionnaires responded?

• 12.5%

• 20.8%

• 33.3%

• 50.8%

• 62.5%

Which of the following statements are true?

• There is an outlier at 19.

• The range is 18.

• 19 tickets were sold.

• All of the above.

A data value that is much higher or much lower than the other values in a data set.

• outlier
• inlier
• immalier
• sublier