Question 1

Identify whether each of the following is either an example of or used to describe numerical data orcategoricaldata.

Blood pressure

Political party

Number of pets

Histogram

Bar Chart

Symmetric, skewed left, skewed right

Mode

Mean

Question 2

What is the average amount of sleep an undergraduate college student gets each night? A survey of 1734 UC Davis undergraduate college students were asked "how many hours of sleep did you get the night before?", and found the average to be 8.25 hours of sleep.

What is the sample?

What is the population?

What is the variable?

Question 3

The following table shows data of students on the distribution of gender and preferred lifetime achievement.

	Male	Female	Total
Olympic Medal	16	4	20
Nobel Prize	3	10	13
Academy Award	9	8	17
Total	28	22	50

For the following questions,

• Your final percentage should have one decimal place and include a percentage sign (like 61.5%).
• On your scratch paper, include and label your work for this question.
• What percentage of students would like a Nobel Prize?
• What percentage of students are men who want to win an Olympic metal?
• What percentage of males would like an Academy Award?
• What percentage of females would like an Academy Award?
• Are males or females more likely to prefer winning an Academy Award? Explain why using complete sentences.
• Question 4
• A study is conducted to investigate whether a new drug helps a person's allergies. 100 subjects are selected. Researchers assigned 50 subjects to take the new drug, and the other 50 subjects to take a sugar pill. All 100 subjects were asked to sniff flowers for an hour, and researchers recorded the number of times a subject sneezed.
• Identify the treatment variable. for answer Option A. Number of times a subject Sneezed or B. Whether or not subject took the new drug
• Identify the outcome variables. for answer Option A. Number of times a subject Sneezed or B. Whether or not subject took the new drug
• Identify the treatment group. For answer Option A. 50 Subjects to taking the new drug B. 50 subjects to taking a sugar pill
• Identify the control group. For answer Option A. 50 Subjects to taking the new drug B. 50 subjects to taking a sugar pill
• Identify the method of data collection Option A. Obeservational study or B. Controlled Expirence Study
• Why did you select this data collection method? Option A. The Subjects choose which pill to take or B. The Subjects were assigned which pill to take.
• What is the relationship between the two variables? Option A. Association or B. Causation
• Question 5 :

The dotplot shows how many times a computer was used daily at a public library during a 30-day period.