Podcast
Questions and Answers
Which of the following is the primary purpose of a scientific experiment?
Which of the following is the primary purpose of a scientific experiment?
- To collect data without analysis
- To prove a hypothesis is correct
- To create a theory from unrelated observations
- To test predictions derived from a hypothesis (correct)
What is a characteristic feature of qualitative research?
What is a characteristic feature of qualitative research?
- It relies heavily on statistical techniques
- It validates existing theories quantitatively
- It focuses on understanding experiences and concepts (correct)
- It uses numerical data for analysis
Which of the following best describes a control group in experiments?
Which of the following best describes a control group in experiments?
- Group that receives the treatment being tested
- Group that is not exposed to the treatment (correct)
- Group that has random variables applied
- Group that ensures results are invalid
Why is it important to conduct multiple trials in an experiment?
Why is it important to conduct multiple trials in an experiment?
What does a hypothesis represent in scientific research?
What does a hypothesis represent in scientific research?
Flashcards
Flashcard Structure
Flashcard Structure
Flashcards are the digital equivalent of physical cards used for memorization. They typically include a term, definition, hint and memory tip.
Memory Tip
Memory Tip
A memory tip aids in recalling information by associating it with memorable cues, images, or stories.
Term
Term
The subject or concept being defined or explained on a flashcard.
Definition
Definition
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Hint
Hint
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Study Notes
Probability and Statistical Concepts
- Probability is a measure of the likelihood of an event occurring. It is calculated as the number of favorable outcomes divided by the total number of possible outcomes. Probabilities range from 0 (impossible) to 1 (certain), inclusive.
Conditional Probability
- Conditional probability is the probability of an event occurring, given that another event has already occurred. It is calculated as P(A|B) = P(A and B) / P(B). Where P(A|B) represents the probability of event A occurring given that event B has occurred.
Independence
- Two events are independent if the outcome of one event does not affect the probability of the other event occurring. If events A and B are independent, P(A and B) = P(A) * P(B).
Mutually Exclusive Events
- Two events are mutually exclusive if they cannot both occur at the same time. If events A and B are mutually exclusive, P(A or B) = P(A) + P(B).
Combinations
- A combination is a selection of items from a group where the order of selection does not matter. The number of combinations of n items taken k at a time is denoted as nCk or (n k) and calculated as n! / (k! * (n-k)!). Where n is the total number of items, and k is the number of items to be selected.
Permutations
- A permutation is an arrangement of items in a specific order. The number of permutations of n items taken k at a time, where order matters, is denoted by nPk and calculated as n! / (n-k)!
Tree Diagrams
- A tree diagram is a visual representation of a multi-stage chance process, showing possible outcomes and their associated probabilities. Used to illustrate conditional and joint probabilities.
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