Interpreting Data

1. Scientists in the jungle want to find the best estimate for the lion population. They tagged and released 20 lions as part of a research project. Later, they found 160 lions, 8 of which were tagged. Find the best estimate of population.

• 160

• 3200

• 64

• 400

• over 1/4 of the customers chose salad

• over 1/4 of the customers chose soup

• most of the customers chose baked potato

• most of the customers chose salad or soup

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Ronald works in an Ornithology department. Students asked him to find out the best estimate of the local bird population so he tied a belt around the legs of 40 birds. A few days later, he observed 520 birds, 34 of which had belts. To the nearest whole number, what is the best estimate for the bird population?

• 612

• 442

• 520

Tags

CCSS.7.SP.A.2

Which statement is not true?

• The majority of students drink milk at lunch

• more students prefer water than juice at lunch

• ten percent of students drink soda at lunch

• two-thirds of the students drink milk or juice at lunch

Farmers marked 45 cows and released them. The next day they counted 150 cows, 15 of which had marks. Find the best estimate for the cow population in village.

• 50

• 150

• 450

• less than 5% of students chose cranberry as their favorite

• more than 50% of students chose apple or orange as their favorite

• less than 1/3 of students chose grape as their favorite

• more than 1/2 of students chose grape or cranberry as their favorite

Tags

CCSS.7.SP.A.2

The animal department wants to estimate baboon population. So they paint 50 baboons with a mark. These baboons were then released into the jungle. After two months, 300 baboons were caught. Among these baboons, 25 were marked. To the nearest whole number, what is the best estimate for the baboon population?

• 150

• 600

• 300

Tags

CCSS.7.SP.A.2

• more than 1/3 of shoppers purchased jeans

• more than 25% of shoppers purchased shoes

• over 50% of shoppers purchased jeans or shoes

• 30% of shoppers purchased jewelry

The government of Mexico declared blue sharks an endangered species. They put tags on 36 blue sharks and released them. Later, they corral 130 blue sharks; among those blue sharks, 20 were tagged. Find the best estimate for the blue shark population?

• 130

• 72

• 234

Tags

CCSS.7.SP.A.2

• about 10% of students wake up at 6:00 am

• More than 3/4 of students wake up at 6:30 am or 7:00 am

• More than 2/5 of students wake up at 7:00 am

• less than 10% of students wake up at 7:30 am

Tags

CCSS.6.RP.A.3C