SP Review

A school cafeteria serves four new items: fish tacos, grilled chicken pizza, vegetarian chili, and turkey burgers. The cafeteria manager randomly asks 50 students in each grade level which menu item they would most like to add to the regular menu. The table shows the results of the survey.
There are 400 sixth-graders who buy lunch each day.Based on the survey results, enter the number of sixth-grade students who would buy the vegetarian chili.

• 168
• 21
• 64

A school librarian wants to increase the number of students who read in their free time. He conducts a survey aimed at finding out what kinds of reading material would make students at his school most likely to read in their free time. Which sample would give the librarian the most useful results?

• 20 people of all ages
• 100 people of all ages
• 20 students at the county library
• 100 students at an after-school fundraiser

Tags

CCSS.RI.6.1

CCSS.RI.6.8

CCSS.RI.7.1

CCSS.RI.7.8

CCSS.RL.7.1

Bob wants to determine which pizza topping his customers prefer the most at his local pizza parlor. He randomly chose 200 customers each day for four consecutive days and asked them which is their favorite one-topping pizza. The results of the survey are shown in the table. Bob made four conclusions. Which of Bob’s conclusions is incorrect?

• Less than 10% of the customers chose mushroom as their favorite pizza.
• Approximately 1/3 of the customers chose sausage as their favorite pizza.
• Approximately 25% of the customers chose cheese as their favorite pizza.
• Close to 1/2 of the customers chose pepperoni pizza as their favorite pizza.

David surveyed 200 middle school students about their favorite season of the year and the season of their birthday. His results are shown in the table. Select the statement that is a reasonable conclusion based on the survey data.

• About 20% of all middle school students have their birthday in the spring.
• Most middle school students’ favorite season is the same season as their birthday.
• More than half of all middle school students would likely choose summer as their favorite season.

The average gas mileages, in miles per gallon, of two types of vehicles are shown in the table. The mean absolute deviation for both trucks and sport-utility vehicles is 1.2. The difference between the mean mileage of trucks and the mean mileage of SUVs is how many times more than the mean absolute deviation of the data sets?

• 3/5
• 1  1/5
• 1  2/3
• 2  2/5

The individual mean scores of the four members of each of two bowling teams, the Strikers and the Bowleros, are given in the table. If a fifth bowler with an individual mean score of 135 were added to each team, for which team would the mean team score increase?

• both teams
• neither team
• the Strikers
• the Bowleros

The box plots summarize the science test scores of Mr. Red’s third-period and fourth-period classes for the same test. Both classes have the same number of students. Which statement is correct?

• The value of the third quartile for each class is the same.
  
• In each class, at least 50% of students scored below 84 on the test.
• In each class, 50% of students have test scores between 80 and 92.
• The median test score for the fourth-period class is 2 points greater than the median test score for the third-period class.

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.B.5

Anna is researching home prices in two large neighborhoods. She randomly selects 6 homes from each neighborhood to compare their most recent sale prices, as shown.
Mocking Bird Court: $185,000, $193,000, $176,000, $205,000, $198,000, $182,000
Red Robin Manor: $215,000, $214,000, $212,000, $130,000, $207,000, $198,000
Based on the sale prices of these homes, which would be an accurate conclusion?

• Comparing the means is not helpful because the mean absolute deviation of prices in Red Robin Manor is much greater than the mean absolute deviation of prices in Mockingbird Court.
• The mean home price is lower in Red Robin Manor than in Mockingbird Court because Red Robin Manor has one home price that is significantly lower than the others.
• There is no significant difference in the selling prices in either neighborhood because the mean selling prices are nearly the same.
• All of the homes in Mocking Bird Court have lower selling prices than the homes in Red Robin Manor.

There are four flavors of ice pops in a box in the freezer: lime, grape, orange, and cherry. If a person chooses an ice pop from the box without looking, the probability of choosing lime is 1/12, grape 1/8, and orange 7/24 .Which describes the probability of choosing a cherry ice pop without looking?

• neither likely nor unlikely
• unlikely
• certain
• likely

A battery company finds 2 defective batteries in a sample of 1000 batteries. A toy manufacturer buys 3 million batteries from the company. Based on the battery company’s findings, how many of the 3 million batteries might be expected to be defective?

• 2000
• 6000
• 3000
• 2 million