Go to your glossary and define “random sampling” and “sampling bias.” In addition to random sampling, what are some other ways to make sure you collect high quality data? Thinking ahead in my investigation… What did you learn from this activity that will help you in designing your own investigation? Sampling Activity Directions: Extension Pour the M&Ms out on the paper, distributing them across the sheet. Do NOT touch the M&Ms after they have hit the paper! Use a random sampling method (rolling the die) to generate an estimate of the total number of M&Ms and M&M colors on the paper based on one square only. Write down the one square you will sample on your data sheet. Count the M&Ms in your one square and write the number on your data sheet. Work with your partner to generate an estimate for the total number of M&Ms on the paper based on the one square. Record your estimate on your data sheet. Don’t touch the M&Ms! Repeat steps 2 through 5 sampling two squares instead of one. Don’t touch the M&Ms! Repeat steps 2 through 5 sample three squares instead of one. Don’t touch the M&Ms! Now, count the actual number of M&Ms and M&M colors on the paper. Record the actual total on your data sheet. Put away all materials. Sampling Activity Data: Extension Sample Size of 1 Sample Size of 2 Sample Size of 3 Square M&M M&M Square M&M M&M Square M&M M&M count diversity count diversity count diversity
Go to your glossary and define “random sampling” and “sampling bias.” In addition to random sampling, what are some other ways to make sure you collect high quality data? Thinking ahead in my investigation… What did you learn from this activity that will help you in designing your own investigation? Sampling Activity Directions: Extension Pour the M&Ms out on the paper, distributing them across the sheet. Do NOT touch the M&Ms after they have hit the paper! Use a random sampling method (rolling the die) to generate an estimate of the total number of M&Ms and M&M colors on the paper based on one square only. Write down the one square you will sample on your data sheet. Count the M&Ms in your one square and write the number on your data sheet. Work with your partner to generate an estimate for the total number of M&Ms on the paper based on the one square. Record your estimate on your data sheet. Don’t touch the M&Ms! Repeat steps 2 through 5 sampling two squares instead of one. Don’t touch the M&Ms! Repeat steps 2 through 5 sample three squares instead of one. Don’t touch the M&Ms! Now, count the actual number of M&Ms and M&M colors on the paper. Record the actual total on your data sheet. Put away all materials. Sampling Activity Data: Extension Sample Size of 1 Sample Size of 2 Sample Size of 3 Square M&M count M&M diversity Square M&M count M&M diversity Square M&M count M&M diversity
vs_independent_investigation_notebook_091217.docx