give answer in 2 steps with explanation at the end of each step and final answer at the end :
Question:
give answer in 2 steps with explanation at the end of each step and final answer at the end :
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Asked by: Test User 100230
Created at: 2025-05-10 13:52:24
Asked by: Test User 100230
Created at: 2025-05-10 13:52:24
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Let's analyze the data and solve the problem step by step as requested.
### **Given Information:**
- 16 four-star films
- 10 three-star films
- 11 two-star films
- 5 one-star films
We need to create a frequency table with **relative frequency** and **cumulative frequency** for each rating.
---
## **Step 1: Calculate Frequency and Relative Frequency**
First, let's list the frequency for each rating and find the total number of films.
- **4 stars:** 16 films
- **3 stars:** 10 films
- **2 stars:** 11 films
- **1 star:** 5 films
**Total number of films = 16 + 10 + 11 + 5 = 42**
**Relative frequency** is calculated as:
\[
\text{Relative Frequency} = \frac{\text{Frequency}}{\text{Total}}
\]
Let's calculate it for each row, rounded to the nearest tenth of a percent:
- **4 stars:** \( \frac{16}{42} \approx 0.381 \rightarrow 38.1\% \)
- **3 stars:** \( \frac{10}{42} \approx 0.238 \rightarrow 23.8\% \)
- **2 stars:** \( \frac{11}{42} \approx 0.262 \rightarrow 26.2\% \)
- **1 star:** \( \frac{5}{42} \approx 0.119 \rightarrow 11.9\% \)
**Explanation:** This step gives us the frequency and relative frequency for each rating.
---
## **Step 2: Calculate Cumulative Frequency**
Cumulative frequency is found by adding each frequency from the top down.
- **4 stars:** 16 (just the 4-star films)
- **3 stars:** 16 + 10 = 26
- **2 stars:** 26 + 11 = 37
- **1 star:** 37 + 5 = 42
**Explanation:** This step shows the running total of the number of films as we move down the ratings.
---
## **Final Answer: Frequency Table**
| Stars | Frequency | Relative Frequency | Cumulative Frequency |
|-------|-----------|-------------------|---------------------|
| 4 | 16 | 38.1% | 16 |
| 3 | 10 | 23.8% | 26 |
| 2 | 11 | 26.2% | 37 |
| 1 | 5 | 11.9% | 42 |
| **Total** | **42** | **100%** | |
---
**Final Explanation:**
- **Step 1:** Found the frequency, total, and relative frequency for each rating.
- **Step 2:** Added cumulative frequency for each rating.
- The completed table summarizes all the required information.
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