Introduction to Stats Practice Questions

A characteristic in a population is called a __________, whereas a characteristic in a sample is called a __________. A) population parameter; sample statistic B) sample statistic; population parameter C) sample parameter; population statistic D) population statistic; sample parameter - A A continuous variable: A) is measured along a continuum B) can be measured at any place beyond the decimal point C) can be measured in whole units or fractional units D) all of the above - D A discrete variable: A) is measured in whole units or categories B) can be measured at any place beyond the decimal point C) can be measured in fractional units D) is measured along a continuum - A A health psychologist studies food intake by recording two measures: the type of food consumed and the number of calories consumed. Which is a nominal scale measure? A) the weight of the food B) the type of food consumed C) the number of calories consumed D) both b and c - B A professor is interested in studying the attitudes of students in her class. She has all of the students in her class fill out a survey and records their responses. In this example, the professor: A) failed to identify the population of interest B) measured data in the sample of students C) measured data in the population of students D) did not have enough data to draw conclusions about the population of interest - C A researcher places a participant in a room filled with 10 strangers. To measure social behavior, he records the number of different people the participant talks to and the time (in seconds) spent talking. The number of people the participant talks to is a __________ variable; the time (in seconds) spent talking is a __________ variable. A) categorical; discrete B) continuous; discrete C) discrete; continuous D) discrete; categorical - C