Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Please code using C++ and only use header <iostream>. Any others will not be accepted. Please write using a globlal constant const int NO=10 and not #define. This is intended to be completed by using for loops as well as the global constant. Thank you!
![**Exams.cpp: Understanding Weighted Averages**
This example illustrates how to calculate weighted averages using a series of test scores.
### Test Scores and Weighted Average Calculation
**Scores:**
- **Test 1:** 60, 50, ..., 55
- **Test 2:** 70, 60, ..., 65
- **Test 3:** 80, 70, ..., 75
- **Test 4:** 90, 80, ..., 84
#### Calculation for Weighted Average:
- The formula for calculating the weighted average is:
\[
0.1(60) + 0.25(70) + 0.3(80) + 0.35(90)
\]
- Breakdown of calculation:
\[
= 6 + 17.5 + 24 + 31.5 = 79.0
\]
- **Weighted Averages:**
- First four scores yield a weighted average of **79.0**.
- Further, a weighted average of **69** is calculated using other series of scores.
- Another set yields a weighted average of **73.65**.
### Averages Calculation for Each Test:
1. **Test 1:**
2. **Test 2:**
3. **Test 3:**
4. **Test 4:**
### Additional Instructions
You should sum up all scores for test one and divide by ten to compute its unweighted average. Repeat this procedure for test two, test three, and test four. This process results in four unweighted averages.
This example aids in understanding how weights impact overall performance in a series of assessments, crucial for educational evaluations.](https://content.bartleby.com/qna-images/question/3f71a40a-4cff-4959-8946-a68dc332c184/31843cdd-22cc-4d27-aafa-392dbd3b545a/xewj9dy_processed.jpeg)
Transcribed Image Text:**Exams.cpp: Understanding Weighted Averages**
This example illustrates how to calculate weighted averages using a series of test scores.
### Test Scores and Weighted Average Calculation
**Scores:**
- **Test 1:** 60, 50, ..., 55
- **Test 2:** 70, 60, ..., 65
- **Test 3:** 80, 70, ..., 75
- **Test 4:** 90, 80, ..., 84
#### Calculation for Weighted Average:
- The formula for calculating the weighted average is:
\[
0.1(60) + 0.25(70) + 0.3(80) + 0.35(90)
\]
- Breakdown of calculation:
\[
= 6 + 17.5 + 24 + 31.5 = 79.0
\]
- **Weighted Averages:**
- First four scores yield a weighted average of **79.0**.
- Further, a weighted average of **69** is calculated using other series of scores.
- Another set yields a weighted average of **73.65**.
### Averages Calculation for Each Test:
1. **Test 1:**
2. **Test 2:**
3. **Test 3:**
4. **Test 4:**
### Additional Instructions
You should sum up all scores for test one and divide by ten to compute its unweighted average. Repeat this procedure for test two, test three, and test four. This process results in four unweighted averages.
This example aids in understanding how weights impact overall performance in a series of assessments, crucial for educational evaluations.
Transcribed Image Text:**Problem 7: Exams.cpp**
A teacher assigns weights to four exams: 10%, 25%, 30%, and 35% respectively. The task is to write a program that processes ten sets of four grades each. The program should calculate and print:
1. The weighted average of each set of grades.
2. The unweighted average for each exam across all sets.
A global constant should be used to define the number of student sets.
---
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