p-value

Now that you have created the null sampling distribution, you can use it to find the p-value associated with the original slope statistic from the twins data. Although you might first consider this to be a one-sided research question, instead, use the absolute value function for practice performing two-sided tests on a slope coefficient.

You can calculate the proportion of TRUE values in a logical vector using mean(). For example, given a numeric vector x, the proportion of cases where x is greater than or equal to 10 can be calculated using mean(x >= 10).

Run a linear regression of Foster vs. Biological on the twins dataset.
Tidy the result.
Filter for rows where term equals "Biological".
Use pull() to pull out the estimate column.
Use abs() to calculate the absolute value of the slopes.

Take Hint (-15 XP)

Exercise

p-value

Instructions 1/2