A scientist wants to know if the color of the water affects how much animals drink. The average amount of water each animal drinks was recorded in milliliters for a week and then graphed. Is there evidence to suggest an association between water color and animal?
|cat intake (ml)||dog intake (ml)||total (ml)|
A farmer brings his produce to the farmer’s market and records whether people buy lettuce, apples, both, or something else.
|bought apples||did not buy apples|
|did not buy lettuce||8||29|
Make a table that shows the relative frequencies for each row. Use this table to decide if there is an association between buying lettuce and buying apples.
Researchers at a media company want to study news-reading habits among different age groups. They tracked print and online subscription data and made a 2-way table.
|internet media||print media|
|18-25 year olds||151||28|
|26-45 year olds||132||72|
|46-65 year olds||48||165|
- Create a segmented bar graph using one bar for each row of the table.
- Is there an association between age groups and the method they use to read articles? Explain your reasoning.
Using the data in the scatter plot, what is a reasonable slope of a model that fits this data?