Benchmark PreTest 7B-8 Inferences

MGSE7.SP.1: Martha is planning to survey people at a water park to determine the most popular water slide at the park. Which would be the best sample for her survey to draw a valid inference?

• Children at the park between the ages of 3 and 5

• Children at the park between the ages of 6 and 10

• Adults at the park between the ages of 20 and 30

• Adults and children of all ages at the park

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

MGSE7.SP.1: A newspaper is conducting a survey to determine which American professional baseball team is most popular. How would you likely get a random sample that is representative of the population?

• By asking people at an Atlanta Braves game

• By calling people from around the country

• By asking every fifth person entering the stadium at a Red Sox game

• By asking people at a New York Yankees game

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

MGSE7.SP.1: A middle school wants to add a coed football program. To determine if the student body would be interested in the program, a survey will be taken. In order to get an unbiased sample which group would the school survey?

• Every 5th student entering the building

• Every student in Mrs. Weldon’s class

• Every student already on the middle school football team

• Every student having a 1st period Science class

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

MGSE7.SP.1: You want to estimate the number of students in a high school who drive cars to school. Which sample is best?

• 4 students in the cafeteria

• All students in 5th grade

• 100 random students during lunch

• 50 random seniors

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

MGSE7.SP.1: When designing problems for a nationwide math test, which of the following should be used in order to avoid bias?

• References to the author’s local area and culture

• Regional slang words and sayings

• Generic places, names and standard vocabulary

• Only common names like Tony and Susan.

How might you collect data to answer the question, “Does the soup taste good?”

• Taste a teaspoon of soup to check the seasoning.

• Read the nutrition label on the soup can.

• Ask people who only eat steak and potatoes.

How might you collect data to answer the question, “What is the median price of a home in our town?

• Find the price of homes listed in the newspaper, and use those data to estimate the median price. Another option is to go to a realty office and get prices for the homes they have listed for sale.

• Survey for home prices in another town.

• Ask random people what they would pay for a house.

Tags

CCSS.6.SP.A.2

How might you collect data to answer the question, “What percentage of girls and of boys in your school have a curfew?”

• Ask a group of students selected at random from the school directory to answer the question.

• Ask students in the bandroom during 4th period.

• Ask a group of 30 7th graders.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

The lunch program at Blake Middle School is being revised to align with the new nutritional standards that reduce calories and increase servings of fruits and vegetables. The administration decided to do a census of all students at Blake Middle School by giving a survey to all students about the school lunches.

Which question could be included in the survey?

• Would you eat salads if they were served?

• How often do you eat at a restaurant?

• What do you eat at the movie theater?

• How many days have you been absent this year?