Karla notices some of the warning signs of depression in her brother, so she searches online for information and help. She finds
a website that has herbal supplements for purchase that claim to treat many of the symptoms she noticed in her brother. What should Karla do to evaluate the validity of the treatment? Check all that apply. consult with the Better Business Bureau ask her doctor for advice read testimonials on the website ask friends for their opinion try the herbal supplements herself speak to a parent or another trusted adult
The median is usually preferred to other measures of central tendency when your data set is skewed (forms a skewed distribution) or you are dealing with ordinal data.
A representative sample is a subset of a population that seeks to accurately reflect the characteristics of the larger group. For example, a classroom of 30 students with 15 males and 15 females could generate a representative sample that might include six students: three males and three females.
