Sampling & Inferential stats (Text & Quiz)

Why are first-year university students often studied in psychological research?

• They are the most intelligent group of students.

• They are the most diverse group of students.

• They are a readily available group of potential research participants.

• They have the most psychological issues.

What is one reason professors encourage students to participate in psychological research?

• To improve their social skills.

• To gain first-hand experience in research.

• To increase their grades in all subjects.

• To reduce their workload.

What is a potential problem with drawing conclusions from research on university students?

• The conclusions may not apply to the entire human race.

• The students are too diverse.

• The research is too expensive.

• The students are not intelligent enough.

What is one of the most important concepts in experimental design mentioned in the text?

• Randomness

• Consistency

• Accuracy

• Precision

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS1-2

Why is it difficult to generalize conclusions to the entire population from a sample?

• Because the sample is always too small

• Because the sample may not be representative of the entire population

• Because the sample is always biased

• Because the sample is always random

What is the absolute requirement for obtaining a random sample from any population?

• Every member of the population must have an equal chance of being selected

• The sample must be large enough

• The sample must be diverse

• The sample must be from a specific subgroup

Why does a randomly selected sample have the best chance of being representative?

• It includes all relevant variables, known and unknown

• It is always larger than other samples

• It is more accurate

• It is more consistent

What is the main problem with generalizing conclusions about populations when samples have been selected in a non-random manner?

• It increases the accuracy of the results.

• It ensures that all variables are considered.

• It can lead to biased and unreliable conclusions.

• It simplifies the experimental process.

Why is random assignment important in experimental research?

• It ensures that the same number of males and females are in each group.

• It helps avoid systematic errors with extraneous variables (EVs).

• It makes the experiment easier to conduct.

• It guarantees that the results will be significant.

What is the purpose of descriptive statistics?

• To manipulate the independent variable (IV).

• To summarize and organize data.

• To conduct experiments with two groups.

• To ensure the accuracy of the data.