Clay Minerals, Silica (SiO2), and Dissolved Potassium Bicarbonate in the Soil

question 42

Multiple Choice

Clay minerals, silica (SiO2) , and dissolved potassium bicarbonate in the soil water are products of which process?

• A) mechanical weathering of granite and rhyolite
• B) chemical weathering of olivine and plagioclase feldspar
• C) differential mechanical weathering of micas
• D) chemical weathering of orthoclase feldspar

---

Definitions:

50th Percentile

Also known as the median, it is the value below which 50% of the observations in a group of data fall.

N - 1

A formula used to calculate the sample variance or sample standard deviation, representing the sample size minus one.

Variance

A measure of the dispersion of a set of data points around their mean value, indicating how spread out the data are.

Measure of Variability

Statistical indices that describe the spread or dispersion within a set of numerical data, including range, variance, and standard deviation.