Dr. Matthews is conducting a study on the relationship between social media and depression. Her results suggest that there is a moderate relationship between time spent on social media and depressive symptoms. What statistical calculation would she have used to arrive at these results? 1] measures of central tendency
2] correlation coefficient
3] descriptive statistics
4] standard deviation

True, but now it isn't a little more than  $5,000, it's more than $10,000 due to inflation, higher taxes, and bad economy.

Answer is d. staying organized

You're asking in the ap section, so i'll give the ap calculus-style answer. alternatively, you can find the vertex of the parabola and use the "y"-coordinate as the answer.

the maximum height can occur at a critical number, that is, a number  such that  .

the derivative of  can be calculated as follows:



find a value of  that is a zero of the derivative:


this is parabola that is opening downward; we can assume there is a maximum at  .

to find that maximum, calculate  .

Weather is one. the economy is another.