# Data Analysis

## 27 terms · Scientific Measurement

### SI Unit

Scientifically accepted units of measurement.

### Base Unit

A defined unit in a system of measurement that is based on an object or event in the physical world.

### Second

The SI base unit for time.

### Meter

The SI base unit for length.

### Kilogram

The SI base unit for mass.

### Kelvin

The SI base unit for temperature.

### Derived Unit

A unit that is defined by a combination of base units.

### Liter

The metric unit for volume equal to one cubic decimeter.

### Density

A ratio that compares the mass of an object to its volume.

### Mass

The amount of matter an object contains.

### Volume

The amount of space an object takes up.

### Celsius

A temperature scale that is based off of the boiling and freezing point of water.

Subtract 273.

### Scientific Notation

Expresses numbers as a multiple of two factors: a number between 1 and 10; and 10 rasied to a power, or exponent.

### Conversion Factor

A ratio of equivalent values used to express the same quantity in different units.

### Dimensional Analysis

A method of problem-solving that focuses on the units used to describe matter.

### Accuracy

Refers to how close a measured value is to an accepted value.

### Precision

Refers to how close a series of measurements are to one another.

### Percent Error

The ratio of an error to an accepted value.

### Significant Figures

Include all known digits plus one estimated digit.

8

17

0.0384

487,300

### Graph

A visual display of data.

### Slope

Rise/Run [(y2-y1)/(x2-x1)]