Statistics - Ch. 6 and Central Limit Theorem Review

These flashcards cover key statistical terms and concepts associated with normal distribution, mean, standard deviation, Z-scores, and the Central Limit Theorem as presented in the lecture notes.

Mean

The average value of a set of numbers, calculated by dividing the sum of the values by the number of values.

Standard Deviation

A measure of the amount of variation or dispersion in a set of values.

Normal Distribution

A symmetric, bell-shaped distribution where most of the observations cluster around the central peak.

Z-Score

A statistical measurement that describes a value's relationship to the mean of a group of values, expressed in terms of standard deviations from the mean.

Inv Norm

A function used to find the z-score that corresponds to a given percentile in a normal distribution.

68-95-99.7 Rule

A statistical rule stating that for a normal distribution, approximately 68% of the data falls within one standard deviation of the mean, 95% falls within two, and 99.7% falls within three.

Probability

The likelihood of the occurrence of an event, expressed as a number between 0 (impossible) and 1 (certain).

Lifetime of a Watch

The duration for which a wristwatch functions effectively before it ceases to work.

Percentile

A value below which a certain percentage of observations in a group of observations falls.

Sampling Distribution

The probability distribution of a statistic obtained through a large number of samples drawn from a specific population.