Question

charles wants to find out if the students in foreign language classes spend more time in class speaking in english or in the foreign language they are studying. charles first gets class lists of all students taking foreign language classes. he then chooses 10 students from each different language class to survey. which best explains why the sample he chose may not be a representative sample? the sample size is not large enough to represent the population. the sample was not chosen at random. the way the sample was chosen may overrepresent or underrepresent students taking certain language classes. the way the sample was chosen does not sample students from each different language class.

Explanation:

A representative sample should reflect the population's proportions. If some language classes have far more students than others, picking 10 from each class will overrepresent small classes and underrepresent large ones, skewing the sample. The other options are incorrect: sample size alone doesn't make it unrepresentative here, the method doesn't explicitly lack randomness within classes, and the last option contradicts the given sampling method.

Answer:

The way the sample was chosen may overrepresent or underrepresent students taking certain language classes.