Roger Steinberg, Department of Natural Sciences, Del Mar College 5000 Dots by …
Roger Steinberg, Department of Natural Sciences, Del Mar College 5000 Dots by Computer (Click image to enlarge and download.)
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This activity is part of the community collection of teaching materials on …
This activity is part of the community collection of teaching materials on climate and energy topics. This activity was submitted by faculty as part of the CLEAN Energy Workshop, held in April, 2011.
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Today we're going to begin our three-part unit on p-values. In this …
Today we're going to begin our three-part unit on p-values. In this episode we'll talk about Null Hypothesis Significance Testing (or NHST) which is a framework for comparing two sets of information. In NHST we assume that there is no difference between the two things we are observing and and use our p-value as a predetermined cutoff for if something seems sufficiently rare or not to allow us to reject that these two observations are the same. This p-value tells us if something is statistically significant, but as you'll see that doesn't necessarily mean the information is significant or meaningful to you.
This “How To….” Manual is intended to assist the new user in …
This “How To….” Manual is intended to assist the new user in implementing standard statistical methods, both parametric and non-parametric, using R statistical software. Its focus is on R implementation, not statistical theory. It includes the R commands, with examples, for the following: proportion tests, t-tests, ANOVA, variance tests, several correlation measures and regression models, Mann-Whitney-Wilcoxon tests, Kruskal-Wallis tests, chi-squared tests, multiple pairwise comparisons and effect sizes. Basic graphical methods are also illustrated.
SSAC Physical Volcanology module. Students build a spreadsheet to calculate velocity of …
SSAC Physical Volcanology module. Students build a spreadsheet to calculate velocity of rising magma in steady-state Plinian eruptions using conservation of mass and momentum.
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The teacher will facilitate a class discussion for students to share their …
The teacher will facilitate a class discussion for students to share their opinions about young adulthood before they start the activity. After some teacher modeling, students will read, annotate, and answer questions about a technical document—including tables and graphs—to gather evidence to support conversations with their classmates about young adulthood. Then, students will write a paragraph about how their generation defines young adulthood.
In this activity, students will investigate the questions: What are the benefits/costs …
In this activity, students will investigate the questions: What are the benefits/costs of 3 varieties of shower head types: standard, low flow, massage spray? Which would be best for a homeowner? For the university dorms?
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The Human Stopwatch 10 second experiment is an experiment that can be …
The Human Stopwatch 10 second experiment is an experiment that can be carried out with online instruction. Students get experience in predicting a 10-second interval and can use descriptive statistics to learn about measurement accuracy and precision.
Lined up shoulder-to-shoulder, learners are the medium that P and S waves …
Lined up shoulder-to-shoulder, learners are the medium that P and S waves travel through in this simple, but effective demonstration. Once "performed", the principles of P and S waves will not be easily forgotten. This demonstration explores two of the four main ways energy propagates from the hypocenter of an earthquake as P and S seismic waves. The physical nature of the Human Wave demonstration makes it a highly engaging kinesthetic learning activity that helps students grasp, internalize and retain abstract information.
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Using thermometers, cotton balls, string and water, students make simple psychrometers—a tool …
Using thermometers, cotton balls, string and water, students make simple psychrometers—a tool that measures humidity. They learn the difference between relative humidity (the ratio of water vapor content to water vapor carrying capacity) and dew point (the temperature at which dew forms). Teams collect data using their homemade psychrometers and then calculate relative humidity inside and outside, comparing their results to an off-the-shelf psychrometer (if available). A lab worksheet is provided for data collection and calculation. As a real-world connection, students learn that humidity and air density is taken into consideration by engineers for many design projects. To conclude, they answer and discuss analysis and application questions.
In this project, students analyze the costs of gasoline nationwide. They also …
In this project, students analyze the costs of gasoline nationwide. They also investigate the cost-effectiveness of purchasing a new hybrid vehicle as opposed to purchasing a new vehicle that runs solely on gasoline.
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This introductory exercise allows students to evaluate predictions from hydraulic geometry, area-discharge …
This introductory exercise allows students to evaluate predictions from hydraulic geometry, area-discharge scaling and downstream fining in a complex field environment. For many this is their first time collecting, entering, plotting and analyzing data. Designed for a geomorphology course Uses online and/or real-time data Addresses student fear of quantitative aspect and/or inadequate quantitative skills
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A set of step by step walk through of a hypothesis testingone …
A set of step by step walk through of a hypothesis testingone proportion z-test using p-valuesChi-square goodness of fit using p-valuesone mean with population standard deviation is known using p-values one mean with population standard deviation is unknown, using p-value
An introduction and examples of how to use statistical hypothesis testing, introducing …
An introduction and examples of how to use statistical hypothesis testing, introducing the five steps in the significance test: 1. Assumptions 2. Hypothesis and signifincance level 3. Test Statistic 4. P-value 5. Conclusion
Aquatic ecosystems are home to a complex intersection of physical and biological …
Aquatic ecosystems are home to a complex intersection of physical and biological factors and an intersection of natural and anthropogenic factors. In the Chesapeake Bay, low oxygen events have occurred periodically and may be connected with harmful algal blooms, fish kills, heavy flooding/runoff events, and warming temperatures. Careful monitoring of the system by the Chesapeake Bay Program since 1984 allows scientists and policymakers to evaluate the causes of the events and monitor improvements in the health of the ecosystem.
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Students will analyze census data and graphs that demonstrate how certain aspects …
Students will analyze census data and graphs that demonstrate how certain aspects of the lives of African-Americans have changed since civil rights leader Martin Luther King Jr. delivered his “I Have a Dream” speech in 1963. Students will select a fact from these data, facts from other sources, and a historical photograph to include on a poster about King.
Students access the ice core data archived at Lamont-Doherty Geological Observatory. They …
Students access the ice core data archived at Lamont-Doherty Geological Observatory. They select a core (Greenland, Antarctica, Quelcaya), pose a working hypothesis regarding the data, import the data in an Excel-readable format, and examine the data to determine correlations between variables and cause/effect as recorded in leads and lags. They generate a written and graphical analysis of the data and, in the next lab period, discuss the similarities and differences among their group outputs in terms of demonstrated correlations, assumptions required, effects of latitude, and any other item that arises.
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