Question
Current Attempt in Progress The following set of data is given. 18,50, \( 6,28,71,31,83 \) (a) Find the mean \( \bar{x} \). Round your answer to one decimal place. \( \bar{x}= \) i (b) Find the median \( m \). \( m= \) i eTextbook and Media
Ask by Ramirez Willis. in the United States
Feb 03,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
**Mean (\( \bar{x} \))**: 41.0
**Median (\( m \))**: 31
Solution
Let's work through each part of the problem step by step.
### Given Data:
\[ 18, \; 50, \; 6, \; 28, \; 71, \; 31, \; 83 \]
There are **7 data points** in total.
---
### (a) Finding the Mean \( \bar{x} \):
The **mean** (average) is calculated by summing all the data points and then dividing by the number of data points.
1. **Sum of the data points:**
\[
18 + 50 + 6 + 28 + 71 + 31 + 83 = 287
\]
2. **Number of data points:**
\[
n = 7
\]
3. **Calculate the mean:**
\[
\bar{x} = \frac{\text{Sum of data points}}{n} = \frac{287}{7} = 41.0
\]
**Answer:**
\[
\bar{x} = 41.0
\]
---
### (b) Finding the Median \( m \):
The **median** is the middle value when the data points are arranged in order. If there's an odd number of data points, the median is the center number.
1. **Arrange the data in ascending order:**
\[
6, \; 18, \; 28, \; 31, \; 50, \; 71, \; 83
\]
2. **Identify the middle position:**
- For 7 data points, the middle position is the 4th value.
3. **Find the median:**
\[
m = 31
\]
**Answer:**
\[
m = 31
\]
---
### Summary:
- **Mean (\( \bar{x} \))**: 41.0
- **Median (\( m \))**: 31
Reviewed and approved by the UpStudy tutoring team
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The Deep Dive
First, let's tackle the mean \( \bar{x} \). To find the mean, you add all the numbers together and divide by the total count. So, \( 18 + 50 + 6 + 28 + 71 + 31 + 83 = 287 \). The total count of numbers is 7. Thus, \( \bar{x} = \frac{287}{7} \approx 41.0 \). Now, onto the median \( m \). To find the median, arrange the numbers in ascending order: \( 6, 18, 28, 31, 50, 71, 83 \). The median is the middle value, so since there are seven data points, the median is the fourth value, which is 31. Hence, \( m = 31 \).