Statistics and Probability

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is a standard deck of cards?

Back

A standard deck of cards consists of 52 cards, divided into four suits: hearts, diamonds, clubs, and spades, with each suit containing 13 cards.

Front

How do you calculate the probability of an event?

Back

Probability of an event = (Number of favorable outcomes) / (Total number of possible outcomes).

Front

What is a biased sample?

Back

A biased sample is a sample that does not accurately represent the population from which it is drawn, leading to skewed results.

Front

What is an unbiased sample?

Back

An unbiased sample is a sample that accurately reflects the characteristics of the population, allowing for valid conclusions.

Front

What is the probability of drawing a red card from a standard deck?

Back

1/2, because there are 26 red cards (hearts and diamonds) out of 52 total cards.

Front

What is the probability of selecting an orange candy if all candies are orange?

Back

100%, because there are only orange candies.

Front

How do you simplify a probability fraction?

Back

To simplify a probability fraction, divide the numerator and denominator by their greatest common divisor.

Front

What is the probability of choosing blue from a group of colored items?

Back

If there are 8 blue items out of 26 total items, the probability is 8/26, which simplifies to 4/13.

Front

What does it mean if a sample is not representative?

Back

It means that the sample does not reflect the diversity or characteristics of the entire population, leading to invalid conclusions.