Question

The cell phone company decided to collect similar data, but this time they collected information of texting speed according to age. Use the process of creating a scatterplot to describe how to create a scatterplot of the new data.

Answer 1

Creating a scatterplot to analyze texting speed according to age involves several steps. Here's a detailed process on how to create one:

### Step 1: Gather the Data

1. **Collect Data**: Ensure that you have the data that includes two variables: age of the individuals (independent variable) and their texting speed (dependent variable). This speed could be measured in words per minute (WPM) or another appropriate unit.

### Step 2: Organize the Data

1. **Create a Data Table**: Organize the collected data in a table format with two columns:
- Column 1: Age (e.g., years)
- Column 2: Texting Speed (e.g., WPM)

For example:
```
| Age | Texting Speed |
|-----|---------------|
| 12 | 50 |
| 15 | 70 |
| 20 | 85 |
| 30 | 60 |
| 40 | 40 |
```

### Step 3: Choose the Axes

1. **Set Up Axes**:
- The x-axis (horizontal) will represent **Age**.
- The y-axis (vertical) will represent **Texting Speed**.

2. **Label the Axes**: Clearly label your axes with appropriate units, for example:
- X-Axis: "Age (years)"
- Y-Axis: "Texting Speed (WPM)"

### Step 4: Determine the Scale

1. **Decide on the Scale**: Based on the range of ages and texting speeds in your data:
- For the x-axis (ages), you may choose increments of 5 or 10 years, depending on the range.
- For the y-axis (texting speed), choose increments that fit the range of speeds (e.g., 0, 20, 40, 60, 80, 100 WPM).

### Step 5: Plot the Data Points

1. **Plot Each Point**: For each individual in your data set, determine their position based on their age and texting speed.
- For instance, for an individual aged 20 with a texting speed of 85 WPM, locate the position at (20, 85) on the graph and mark that point.

### Step 6: Analyze the Scatterplot

1. **Review the Scatterplot**: After plotting all data points, look for patterns or trends:
- Check if there is a correlation (positive, negative, or none) between age and texting speed.
- Identify if certain age groups have significantly different texting speeds.

### Step 7: Interpret the Results

1. **Draw Conclusions**: Based on the visual representation, formulate conclusions regarding how age might affect texting speed.
- For example, you may notice that younger individuals generally have a higher texting speed compared to older individuals.

### Additional Tips:
- Use different colors or shapes for different groups (if applicable) to enhance clarity.
- If necessary, include a trend line to show the general direction of the data points.
- Ensure your scatterplot is clear and easy to read, with a legend if needed.

By following these steps, you can create a scatterplot that effectively visualizes the relationship between age and texting speed, leading to insightful analyses.