A

**Scatter**(**XY**)**Plot**has points that show the relationship between two sets of data. In this example, each dot shows one person's weight versus their height. (The data is plotted on the**graph**as "Cartesian (x,y) Coordinates")Subsequently, one may also ask, how do you identify points on a graph?

**To find the x-coordinate of a point on a graph:**

- Draw a straight line from the point directly to the x-axis.
- The number where the line hits the x-axis is the value of the x-coordinate.

What is the point on the graph?

A

**point**-to-**point graph**, also called a line**graph**, is a pictorial rendition of data in which specific values of a function are plotted as dots on a coordinate plane. Adjacent pairs of dots are connected by straight lines.1

## Why do we need to use graphs?

By organizing data, a scientist can more easily interpret what has been observed. Making sense of data is called interpretation. Since most of the data scientist collect is quantitative, data tables and charts are usually used to organize the information.

**Graphs**are created from data tables.2

## Is scatter plot quantitative?

**Scatter plots**are similar to line graphs in that they start with mapping

**quantitative**data points. The difference is that with a

**scatter plot**, the decision is made that the individual points should not be connected directly together with a line but, instead express a trend.

3

## What is the purpose of the chart?

A

**chart**is a graphical representation of data, in which "the data is represented by symbols, such as bars in a bar**chart**, lines in a line**chart**, or slices in a pie**chart**". A**chart**can represent tabular numeric data, functions or some kinds of qualitative structure and provides different info.4

## What is the line of best fit on a scatter plot?

A

**line of best fit**is a straight**line**drawn through the center of a group of data points**plotted**on a**scatter plot**. The**line of best fit**shows whether these two variables appear to be correlated and can be used to help identify trends occurring within the dataset.5

## What is the line of best fit?

**Line**of

**Best Fit**. A

**line**of

**best fit**(or "trend"

**line**) is a straight

**line**that

**best**represents the data on a scatter plot. This

**line**may pass through some of the points, none of the points, or all of the points. You can examine

**lines**of

**best fit**with: 1.

6

## What is the definition of graphs in math?

a diagram representing a system of connections or interrelations among two or more things by a number of distinctive dots, lines, bars, etc.

**Mathematics**. a series of points, discrete or continuous, as in forming a curve or surface, each of which represents a value of a given function.7

## What is a scatter graph?

A

**scatter plot**(also called a scatterplot,**scatter graph**,**scatter chart**, scattergram, or**scatter diagram**) is a type of**plot**or mathematical**diagram**using Cartesian coordinates to display values for typically two variables for a set of data. If the points are color-coded, one additional variable can be displayed.8

## What is a visual analysis ABA?

**Visual Analysis**of

**ABA**Data. “Behaviour Analysts employ a systematic form of examination known as

**visual analysis**to interpret graphically displayed data."

9

## What does it mean to be perfectly correlated?

Positive

**correlation**is a relationship between two variables in which both variables move in tandem. In statistics, a**perfect**positive**correlation**is represented by 1, while 0 indicates no**correlation**and negative 1 indicates a**perfect**negative**correlation**.10

## What does the trend line tell you?

If

**you**want,**you**can display this value on your chart. A linear**trendline**is a best-fit straight**line**that is used with simple linear data sets. Your data is linear if the pattern in its data points resembles a**line**. A linear**trendline**usually shows that something is increasing or decreasing at a steady rate.11

## How do you read a graph?

**Steps**

- Identify what the graph represents.
- Check the scale for each graph element.
- Locate the graph element you want information on.
- Read directly up from "August" until you find a dot or a slanting line, on a line graph, or the top of a bar for a bar graph.

12

## How do you make an XY graph on Excel?

**Creating an xy scattergraph in Microsoft Excel**

- Select the data and click on the chart wizard button:
- Choose an x-y scatter graph:
- Choose finish:
- Click on a point on the chart to highlight the data points:
- Choose Chart: Add Trendline.
- Choose a linear regression and then click on the Options tab.

13

## What is a scatter plot used for?

Scatter plots are

**similar**to line graphs in that they use horizontal and vertical axes to plot data points. However, they have a very specific purpose. Scatter plots show how**much**one variable is**affected**by another. The relationship between two variables is called their correlation .14

## How do you make a graph on Excel?

**To insert a chart:**

- Select the cells you want to chart, including the column titles and row labels. These cells will be the source data for the chart.
- From the Insert tab, click the desired Chart command.
- Choose the desired chart type from the drop-down menu.
- The selected chart will be inserted in the worksheet.

15

## What does it mean to say that two variables are negatively correlated?

**Negative correlation**is a relationship between

**two variables**in which one

**variable**increases as the other decreases, and vice versa. In statistics, a perfect

**negative correlation**is represented by the value -1.00, a 0.00 indicates no

**correlation**, and a +1.00 indicates a perfect positive

**correlation**.

16

## What is the stem and leaf plot?

A

**Stem and Leaf Plot**is a special table where each data value is split into a "**stem**" (the first digit or digits) and a "**leaf**" (usually the last digit).17

## What is the meaning of line graph?

A

**line chart**or**line graph**is a type of**chart**which displays information as a series of data points called 'markers' connected by straight**line**segments. It is a basic type of**chart**common in many fields.18

## How do you make a scatter plot on TI 84?

**TI-84: Setting Up a Scatter Plot**

- Go to [2nd] "STAT PLOT". Make sure that only Plot1 is ON.
- Go to Y1 and [Clear] any functions.
- Go to [STAT] [EDIT]. Enter your data in L1 and L2.
- Then go to [ZOOM] "9: ZoomStat" to see the scatter plot in a "friendly window".
- Press [TRACE] and the arrow keys to view each data point.