At what point does data switch from being an outlier to part of the average? Scholars view conflicting news articles about protesters. They must decide which, if any, side is using the correct sample to draw their conclusions. It's a...

Using a 2002 California Gray David recall vote as an example, young statisticians  identify sources of bias in samples and find ways of reducing and eliminating sampling bias. They consider ways to select random samples from a...

Students explore statistics by conducting a scientific study. In this data analysis lesson, students conduct a class poll about popular foods of their classmates. Students complete a worksheet and discuss how bias opinions affect the...

There is bias in many aspects of our lives, and math is no exception! Learners explore provided data to understand the meaning of biased and random samples. The resource includes various data sets from the same population, and...

Some say that you can make statistics say whatever you want. It is important for learners to recognize these biases. Pupils learn about sample bias and the different types of samples.

Students collect and sort rocks based on visible characteristics.  In this statistics instructional activity, students determine adequate sample size and categorize rocks based on characteristics.  The book Everybody Needs a...

Pupils watch a video to learn about different types of sample design and how to use technology to create a random sample. They discover different types of bias that may happen due to the sampling design or the questions. Learners use...

Emerging statisticians develop the ability to make inferences from sample data while also working on proportional relationships in general. Here, young learners examine samples for bias, and then use random samples to make...

Students demonstrate how the results of a poll or other scientific study can be biased by selecting special types of people to respond or by asking only certain questions.

Statistics can be manipulated to say what you want them to say. Teach your classes to be wise consumers and sort through the bias in those reports. Young statisticians study different statistical reports and analyze them for...

Students consider the advantages and disadvantages of various sampling techniques. They define a simple random sample and identify possible sources of bias in other types of samples. Answer Key included.

In this probability and statistics worksheet, students determine when a collected data or a graph of the data could be biased.  The one page worksheet contains four multiple choice questions.  Answers are included.   

Seventh graders solve and graph 10 different problems that include various questions related to data on a graph. First, they create bar graphs to display the data given. Then, pupils determine the random sample of a population listing...

Students explore the concept of sampling techniques. In this sampling techniques lesson, students identify possible sources of bias in situations such as phone polls, supermarket surveys, and drawing names from a phone book. Students...

Students explore different methods of taking surveys and conducting polls and examine these methods for bias. They design and administer a sample survey, analyze the data and present their findings to the class.

To understand how biased data is misleading, learners analyze survey data and graphical representations. They use that information to design their own plans to collect information on consumer thoughts about Chocolicious cereal. 

In this bias in graphs worksheet, students examine graphs and explain the data. They determine why the graph is or is not biased. This four-page worksheet contains approximately 6 problems. Explanations and examples are provided.

In this survey bias worksheet, learners solve and complete 2 different types of problems regarding a survey. First, they identify various sources of bias. Then, students describe how to minimize bias in assessing statistical surveys.

Students practice formulating a hypothesis and designing an experiment to test the hypothesis. They identify several sampling techniques they can use to test their hypotheses.

It's 268 words, but one only needs to consider 10 of them at a time. A data collection and analysis activity has learners investigate the lengths of words in the Gettysburg Address. They first self-select a sample of 10 words and...

Show your classes how different means can represent the same data. Individuals collect household size data and calculate the mean. Pupils learn how handling of the data influences the value of the mean. 

Sixth graders examine how to select samples and apply them to an experiment. In this sampling lesson, 6th graders use a bag of yellow and blue cubes to take a sample. They predict how many of each color there are the bag. They set up and...

In this sampling methods activity, students solve the six problems using sampling methods and determining if the results are biased or unbiased.

In this algebra worksheet, students identify bias as they analyze data. They solve word problems about sampling and surveys. There are 2 questions with an answer key.