Unit 1 APP Experimental Design- Show Me Activity

Jonathan is trying to determine how completing daily crossword puzzles impacts cognitive decline in Americans over the age of 80. All Americans who are over the age of 80 would be the ________

• representative sample

• sample

• population

• random sample

Jonathan is trying to determine how completing daily crossword puzzles impacts cognitive decline in Americans over the age of 80. The 20 individuals which proportionally reflect the population as a whole who chosen to participate in the study are the___________.

• sample

• representative sample

• population

• random sample

Jonathan is trying to determine how completing daily crossword puzzles impacts cognitive decline in Americans over the age of 80.

The 20 individuals chosen by chance over the age of 80 in his hometown who he actually studies.

• random selection

• representative sample

• representative selection

• random sample

A researcher wants to determine if his new Internet study guide will improve test scores in his college classes.  He gives all the students in his college classes a number and then by chance chooses 50 numbers to determine who will participate in the study. All of the students in the professor’s class is the __.

• representative sample

• sample

• population

• random sample

A researcher wants to determine if his new Internet study guide will improve test scores in his college classes.  He gives all the students in his college classes a number and then by chance chooses 50 numbers to determine who will participate in the study. The 50 students chosen to be in the study are selected via_____.

• random selection

• non-random selection

• random assignment

• non-random assignment

A researcher recruits 100 participants for an experiment on memory.  She places their names in an alphabetical list.  Those who have last names that begin with A-L are placed into the group that receive memory training.  Those whose last names begin with M-Z are placed in the group which does not receive any memory training. This is an example of_____________.

• random selection

• non-random selection

• random assignment

• non-random assignment

This same researcher places all of the names of her participants for the memory training into a computer listing.  The computer program arbitrarily picks names which she then places into the experimental and control groups. This is___.

• random selection

• non-random selection

• random assignment

• non-random assignment

Ann Elizabeth wants to study the impact of interference on learning when an individual attempts to learn two languages at the same time.  She will test adult American learners.  She asks all of her colleagues in the Human Relations department to be in her study. This is______.

• random sample

• non-random sample

• random selection

• non-random selection

Ann Elizabeth wants to study the impact of interference on learning when an individual attempts to learn two languages at the same time.  She will test adult American learners. Instead of asking her department to cooperate, she asks for volunteers via a website for language learners. This is_______.

• random sample

• non-random sample

• random selection

• non-random selection

Aaron is doing research on hours of sleep and reaction time.  He has acquired a sample of participants.  However, he uses great care to be sure that all segments of his population are represented in his research group .  This reflects the diversity of the population to which he is generalizing his results. This is______.

• representative sample

• non-representative sample

• representative assignment

• non-representative assignment