EOC Flashcard #4 Alg. 2B

Front

What is sampling bias?

Back

Sampling bias occurs when the sample selected for a study does not accurately represent the population intended to be analyzed, leading to skewed results.

Front

Give an example of sampling bias.

Back

Calling residents during the day and asking for their feedback can lead to sampling bias, as it may exclude those who work during the day.

Front

What is the mean in a normal distribution?

Back

The mean is the average value of a set of data points, which is the center of the normal distribution curve.

Front

What does standard deviation represent in a normal distribution?

Back

Standard deviation measures the amount of variation or dispersion in a set of values. A smaller standard deviation indicates that the values tend to be close to the mean.

Front

In a normal distribution, what percent of data falls within one standard deviation of the mean?

Back

Approximately 68% of the data falls within one standard deviation of the mean.

Front

What is the empirical rule in statistics?

Back

The empirical rule states that for a normal distribution, about 68% of the data falls within one standard deviation, 95% within two standard deviations, and 99.7% within three standard deviations.

Front

How do you calculate the probability of an event?

Back

Probability is calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Front

What is conditional probability?

Back

Conditional probability is the probability of an event occurring given that another event has already occurred.

Front

Write the formula for conditional probability.

Back

The formula for conditional probability is P(A|B) = P(A and B) / P(B), where A and B are two events.

Front

What is the probability that a randomly selected student wants to be a therapist given that the student has a fear of snakes?

Back