#### first emperor the man who made china

Who was the first real emperor of China and what did he...

Describe how a clam might become a fossil. **The shell falls to the bottom and is buried under mud and sediment**. Mineral-rich water soaks into the pore spaces, leaving minerals behind. … As the mud turns to rock, the shell becomes a fossil.

Correlation, also called as correlation analysis, is a term used to denote **the association or relationship between two (or more) quantitative variables**. … Similar to the measures of association for binary variables, it measures the “strength” or the “extent” of an association between the variables and also its direction.

There are three possible results of a correlational study: a **positive correlation, a negative correlation, and no correlation**. A positive correlation is a relationship between two variables in which both variables move in the same direction.

Correlation is a statistical measure that indicates **the extent to which two or more variables fluctuate in relation to each other**. … A correlation coefficient is a statistical measure, of the degree to which changes to the value of one variable predict change to the value of another.

The principle of fossil correlation states that **the strata containing a group of fossils that are all the same age must be of similar age to the fossils**. The principle works because each species has a finite life span, and these eventually become extinct and after extinction do not reappear. …

4.543 billion years

Why is fossil correlation important for figuring out Earth’s geologic history? **The Law of Fossil Succession is very important to geologists who need to know the ages of the rocks they are studying**. The fossils present in a rock exposure or in a core hole can be used to determine the ages of rocks very precisely.

Along with other geological evidence from rocks and structures, fossils even give us clues about past climates, **the motions of plates, and other major geological events**. Since the present is the key to the past, what we know about a type of organism that lives today can be applied to past environments.

William Smith, known in his day as “Strata Smith”, was a civil engineer and geologist. The “Father of English Geology”, he was **responsible for initiating the production of the first geological map of England and Wales**.

One method for correlation is looking for similarity of rock type and characteristics (**grain size, composition, cements, sorting and rounding**) (p. 156). Since there are a multitude of similar looking sandstones, for example, more information than that is usually needed.

The **principle of faunal succession**, also known as the law of faunal succession, is based on the observation that sedimentary rock strata contain fossilized flora and fauna, and that these fossils succeed each other vertically in a specific, reliable order that can be identified over wide horizontal distances.

sedimentary rocks

Fossils are mostly found where sedimentary rocks of the right age are exposed, such as river valleys, cliffs and hillsides, and human-made exposures such as quarries and road cuttings.

Teeth fossilize through a process called **permineralization**. As water seeps through sediments over the teeth, it transports the minerals that are found in the sediment. These minerals fill in pore spaces in the tooth causing them to fossilize.
## Can bones be fossils?

The most common fossils are **bones** and teeth, but fossils of footprints and skin impressions exist as well. … Fossils are classified as either body fossils or trace fossils. Body fossils were parts of the organism, such as bones or teeth.
## Can shells be fossils?

## What is meant by correlation?

## Is correlation the same as dependency?

## What is correlation PDF?

## What does a correlation tell you?

## Why do we use correlation?

## What is the difference between correlation and regression?

## What are the 4 types of correlation?

## What are types of correlation?

## What is the study of lithology?

## What are rock and mineral fragments called?

Shells are **preserved without being dissolved only when they are buried in sediments** that consist of calcium carbonate minerals, like limestones. … The most common fossils are shells of marine animals like clams, snails, or corals.

Correlation is a statistical measure that **expresses the extent to which two variables are linearly related** (meaning they change together at a constant rate). It’s a common tool for describing simple relationships without making a statement about cause and effect.

In statistics, when we talk about dependency, we are referring to any statistical relationship between two random variables or two sets of data. … Correlation, on the other hand refers to any of a broad class of statistical relationships **involving** dependence.

variables are related. … Correlation is **the relationship between two variables in which the changes in the values of one variable are followed by changes in the values of the other variable**.

They can tell us about **the direction of the relationship**, the form (shape) of the relationship, and the degree (strength) of the relationship between two variables. The Direction of a Relationship The correlation measure tells us about the direction of the relationship between the two variables.

Correlation is used to describe the linear relationship between two continuous variables (e.g., height and weight). In general, correlation tends to be used **when there is no identified response variable**. It measures the strength (qualitatively) and direction of the linear relationship between two or more variables.

The main difference in correlation vs regression is that **the measures of the degree of a relationship between two variables; let them be x and y**. Here, correlation is for the measurement of degree, whereas regression is a parameter to determine how one variable affects another.

Usually, in statistics, we measure four types of correlations: **Pearson correlation, Kendall rank correlation, Spearman correlation, and the Point-Biserial correlation**.

**There are three types of correlation:**

- Positive and negative correlation.
- Linear and non-linear correlation.
- Simple, multiple, and partial correlation.

What is the meaning of correlation as related to fossils? **Fossils can be used to match rock units in different areas**.

Definition of lithology

1 : **the study of rocks**. 2 : the character of a rock formation also : a rock formation having a particular set of characteristics.

Weathering produces rock and mineral fragments known as **clastic sediments**. The word clastic comes from the Greek word klastos, meaning “broken”. Clastic sediments range in size from huge boulders to microscopic particles.
## Who discovered Earth?