Standard #: MA.7.DP.1.3


This document was generated on CPALMS - www.cpalms.org



Given categorical data from a random sample, use proportional relationships to make predictions about a population.


Examples


Example: O’Neill’s Pillow Store made 600 pillows yesterday and found that 6 were defective. If they plan to make 4,300 pillows this week, predict approximately how many pillows will be defective.

Example: A school district polled 400 people to determine if it was a good idea to not have school on Friday. 30% of people responded that it was not a good idea to have school on Friday. Predict the approximate percentage of people who think it would be a good idea to have school on Friday from a population of 6,228 people.



Related Courses

Course Number1111 Course Title222
1205020: M/J Accelerated Mathematics Grade 6 (Specifically in versions: 2014 - 2015, 2015 - 2020, 2020 - 2022, 2022 and beyond (current))
1205040: M/J Grade 7 Mathematics (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
1204000: M/J Foundational Skills in Mathematics 6-8 (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current))
7812020: Access M/J Grade 7 Mathematics (Specifically in versions: 2014 - 2015, 2015 - 2018, 2018 - 2019, 2019 - 2022, 2022 and beyond (current))


Related Access Points

Access Point Number Access Point Title
MA.7.DP.1.AP.3 Given data from a random sample of the population, select from a list an appropriate prediction about the population based on the data.


Related Resources

Formative Assessments

Name Description
Prediction Predicament

Students are asked to use sample data to make and assess a prediction.

School Days

Students are asked to use data from a random sample to estimate a population parameter and explain what might be done to increase confidence in the estimate.

Movie Genre

Students are asked to use data from a random sample to draw an inference about a population.

Lesson Plans

Name Description
Is My Backpack Too Massive?

This lesson combines many objectives for seventh grade students. Its goal is for students to create and carry out an investigation about student backpack mass. Students will develop a conclusion based on statistical and graphical analysis.

Cricket Songs

Using a guided-inquiry model, students in a math or science class will use an experiment testing the effect of temperature on cricket chirping frequency to teach the concepts of representative vs random sampling, identifying directly proportional relationships, and highlight the differences between scientific theory and scientific law.

Computer Simulated Experiments in Genetics

A computer simulation package called "Star Genetics" is used to generate progeny for one or two additional generations. The distribution of the phenotypes of the progeny provide data from which the parental genotypes can be inferred. The number of progeny can be chosen by the student in order to increase the student's confidence in the inference.

Perspectives Video: Experts

Name Description
Statistical Sampling Results in setting Legal Catch Rate 

Fish Ecologist, Dean Grubbs, discusses how using statistical sampling can help determine legal catch rates for fish that may be endangered.

Download the CPALMS Perspectives video student note taking guide.

Assessment of Antarctic Ice Sheet Movement Rate by Sediment Core Sampling

Eugene Domack, a geological oceanographer, describes how sediment cores are collected and used to estimate rates of ice sheet movement in Antarctica. Video funded by NSF grant #: OCE-1502753.

Mathematically Modeling Hurricanes

Entrepreneur and meteorologist Mark Powell discusses the need for statistics in his mathematical modeling program to help better understand hurricanes.

Using Statistics to Estimate Lionfish Population Size

It's impossible to count every animal in a park, but with statistics and some engineering, biologists can come up with a good estimate.

Tow Net Sampling to Monitor Phytoplankton Populations

How do scientists collect information from the world? They sample it! Learn how scientists take samples of phytoplankton not only to monitor their populations, but also to make inferences about the rest of the ecosystem!

Managing Lionfish Populations

Invasive lionfish are taking a bite out of the ecosystem of Biscayne Bay. Biologists are looking for new ways to remove them, including encouraging recreational divers to bite back!

Perspectives Video: Professional/Enthusiasts

Name Description
Nestle Waters & Statistical Analysis

Hydrogeologist from Nestle Waters discusses the importance of statistical tests in monitoring sustainability and in maintaining consistent water quality in bottled water.

Fishery Independent vs Dependent Sampling Methods for Fishery Management

NOAA Scientist Doug Devries discusses the differences between fishery independent surveys and fishery independent surveys.  Discussion includes trap sampling as well as camera sampling. Using graphs to show changes in population of red snapper.

Camera versus Trap Sampling: Improving how NOAA Samples Fish

Underwater sampling with cameras has made fishery management more accurate for NOAA scientists.

Making Inferences about Wetland Population Sizes

This ecologist from the Coastal Plains Institute discusses sampling techniques that are used to gather data to make statistical inferences about amphibian populations in the wetlands of the Apalachicola National Forest.

Random Sampling to Estimate Wildlife Populations

Dr. Bill McShea from the Smithsonian Institution discusses sampling and inference in the study of wildlife populations.

This video was created in collaboration with the Okaloosa County SCIENCE Partnership, including the Smithsonian Institution and Harvard University.

Sampling Bird Populations to Track Environmental Restoration

Sometimes scientists conduct a census, too! Learn how population sampling can help monitor the progress of an ecological restoration project.

Perspectives Video: Teaching Idea

Name Description
Pitfall Trap Classroom Activity

Patrick Milligan shares a teaching idea for collecting insect samples.

Text Resource

Name Description
Cell Phone Ownership Hits 91% of Adults

This informational text resource is intended to support reading in the content area. A Pew Research Center survey indicates that cell phone ownership is at an all-time high, with 91% of Americans owning a cell phone in 2013. Statistical tests show that cell phone usage is significantly higher in men, college-educated people, the wealthy, and those living in urban/suburban areas. This rise in ownership is associated with a variety of positive impacts of cell phone use, but previous research shows there are several negative impressions and impacts of cell phones as well.

Student Resources

Perspectives Video: Experts

Name Description
Using Statistics to Estimate Lionfish Population Size:

It's impossible to count every animal in a park, but with statistics and some engineering, biologists can come up with a good estimate.

Tow Net Sampling to Monitor Phytoplankton Populations:

How do scientists collect information from the world? They sample it! Learn how scientists take samples of phytoplankton not only to monitor their populations, but also to make inferences about the rest of the ecosystem!

Managing Lionfish Populations:

Invasive lionfish are taking a bite out of the ecosystem of Biscayne Bay. Biologists are looking for new ways to remove them, including encouraging recreational divers to bite back!

Perspectives Video: Professional/Enthusiast

Name Description
Sampling Bird Populations to Track Environmental Restoration:

Sometimes scientists conduct a census, too! Learn how population sampling can help monitor the progress of an ecological restoration project.



Parent Resources

Perspectives Video: Experts

Name Description
Using Statistics to Estimate Lionfish Population Size:

It's impossible to count every animal in a park, but with statistics and some engineering, biologists can come up with a good estimate.

Tow Net Sampling to Monitor Phytoplankton Populations:

How do scientists collect information from the world? They sample it! Learn how scientists take samples of phytoplankton not only to monitor their populations, but also to make inferences about the rest of the ecosystem!

Managing Lionfish Populations:

Invasive lionfish are taking a bite out of the ecosystem of Biscayne Bay. Biologists are looking for new ways to remove them, including encouraging recreational divers to bite back!

Perspectives Video: Professional/Enthusiast

Name Description
Sampling Bird Populations to Track Environmental Restoration:

Sometimes scientists conduct a census, too! Learn how population sampling can help monitor the progress of an ecological restoration project.



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