Stats Fall Final Review draft

What is quantitative data?

• Data that can be measured; answer is a number with units.

• Data that can be grouped based on characteristics.

• Data that is always categorical.

• Data that cannot be measured.

Which of the following is an example of categorical data?

• Hair color

• Distance

• Shoe size

• Weight

The values in red in the table represent data counts for which group?

• Full time students

• All students

• Part time students

• Number of times students visited tutoring

What percentage of students go to tutoring two or three times a week?

• 52%

• 30%

• 45%

• 18%

What percentage of full-time students go to tutoring four or more times a week?

• 18%

• 25%

• 52%

• 30%

What does a unimodal distribution have?

• Two peaks

• One peak

• No peaks

• Three peaks

In a bimodal distribution, where are the peaks typically located?

• Between 10-20 and 70-80

• Between 20-30 and 80-90

• Between 40-50 and 90-100

• Between 30-40 and 60-70

What is a characteristic of a symmetric distribution?

• Data is skewed to the right

• Data is skewed to the left

• Data is roughly the same on the left and right when split down the middle

• Data has no peaks

What does it mean if data is skewed to the right?

• The tail end of data is to the left

• The tail end of data is to the right

• The data has no tail

• The data is symmetric

What is the spread of the data if the range is the distance between the lowest and highest values?

• 50

• 75

• 100

• 125