Which of the Following Best Describes an Andesite

question 32

Multiple Choice

Which of the following best describes an andesite?

• A)a coarse-grained,intermediate igneous rock
• B)a fine-grained,intermediate igneous rock
• C)a coarse-grained,felsic igneous rock
• D)a fine-grained,felsic igneous rock

---

Definitions:

Sample Mean

The average of all the data points in a sample, used as an estimate of the population mean.

Population Standard Deviation

A measure of the dispersion or variability of a set of data points in a population, indicating how much each member differs from the population mean.

Confidence Level

The probability or percentage that specifies how confident one is in a statistical estimate or interval to contain the true parameter of the population.

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter at a specified confidence level.