Exploratory Data Analysis Unit Test

Identify the Sample:
A restaurant wants to know if their customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The restaurant concluded that most customers do not order dessert.

• 20 customers
• All customers
• 8 customers
• Dessert

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• thirty students who are often tardy
• thirty students who are rarely tardy
• thirty of her friends
• thirty randomly selected students from her school

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

Sam tested every 50th candy bar from the assembly line to make sure there were enough peanuts in each bar.  He found 15% did not have enough peanuts.  How many candy bars do not have enough peanuts if the factory produces 20,000 candy bars?

• 300
• 3,000
• 300,000
• 50

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

How many of the students surveyed eat at least 4 servings of fruits and vegetables daily?

• 4

• 8

• 12

• 20

Answer explanation

"At least 4" means "4 or more," which is 8 + 3 + 1 = 12.

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.B.4

CCSS.6.SP.B.5

What percentage of the students surveyed eat no more than 3 servings of fruits and vegetables daily?

• 31.2%

• 20

• 68.8%

• 62.5%

Answer explanation

There are 20 students who eat no more than 3 servings daily and a total of 32 students. So, 20/32 = 0.625, or 62.5%.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.ID.A.1

Identify qualitative data (CHECK ALL THAT APPLY).

• Height of the Empire State Building

• Student ID Number

• Brand of cellphone

• Number of highlighters in your bookbag

• Marital Status

Tags

CCSS.HSS.ID.B.5

Identify Quantitative data (CHECK ALL THAT APPLY)

• Height of the Empire State Building

• Cellphone Number

• Brand

  of cellphone

• Number of highlighters in your bookbag

• Marital Status

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.4

Identify the type of sampling

"How much sleep do high school students get on a typical school night? A counselor designed a survey to find out. To make data collection easier, the counselor surveyed the first 100 students to arrive at school on a particular morning. These students reported an average of 7.2 hours of sleep on the previous night.

• Stratified

• Simple Random

• Cluster

• Convenience

• Systematic

Tags

CCSS.HSS.IC.B.3

The data in this figure represents the annual salaries of 120 professional mathematicians.

Approximately how many professional mathematicians make $50,000 or more?

• 14

• 40

• 50

• 60

Tags

CCSS.HSS.ID.A.1

• Population

• Sample

• Undefine

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4