Records of Extinctions on the Planet Indicate That

question 45

Multiple Choice

Records of extinctions on the planet indicate that

• A)although Earth has experienced five mass extinctions,the diversity of life appears to be greater now than ever before.
• B)mass extinctions on the planet have caused a steady decline over hundreds of millions of years,both in the numbers and abundance of species.
• C)mass extinctions have caused the number of predator genera to decline over time.
• D)extinction rates are highest when global temperatures are lower.

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Definitions:

Sample Mean

The average value computed from a sample of data, used to estimate the population mean.

Descriptive Measures

Statistical calculations used to summarize or describe characteristics of a dataset, including measures like count, mean, median, and mode.

Central Tendency

A statistical measure that identifies a single value as representative of an entire distribution, aiming to provide an accurate description of the entire data set.

Median

The middle value in a data set, which divides the set into two equal halves, with an equal number of data points above and below it.