The function f graphed below is defined by a polynomial expression of degree 4. Use the graph to solve the exercise. y A (a) If f is increasing on an interval, then the y-values of the points on the graph --Select--- ♥]as the x-values increase. From the graph of f we see that f is increasing on the intervals . (Enter your answer using interval notation.) (b) If f is decreasing on an interval, then the y-values of the points on the graph [---Select--- V] as the x-values increase. From the graph of f shown above, we see that f is decreasing on the intervals . (Enter your answer using interval notation.)
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.

Description of the graph:
- This is a continuous curve plotted against an x-axis ranging from \(0\) to \(5\) and a y-axis where values notably exist between \(-3\) and \(2\).
- The polynomial function \(f\) appears to feature three peaks (local maxima) and troughs (local minima).
- The curve fluctuates and spans upward and downward twice in the given interval, showcasing the classic behavior of polynomials of degree 4.
### Exercise
(a) If \(f\) is increasing on an interval, then the y-values of the points on the graph \(---Select---\) as the x-values increase.
From the graph of \(f\), we see that \(f\) is increasing on the intervals \[ \_\_\_\_\_\_\_\_\_ \]. (Enter your answer using interval notation.)
**Answer:** Identify ranges where the function \(f\) rises as we move from left to right. Specifically, look at areas going uphill.
(b) If \(f\) is decreasing on an interval, then the y-values of the points on the graph \(---Select---\) as the x-values increase.
From the graph of \(f\), we see that \(f\) is decreasing on the intervals \[ \_\_\_\_\_\_\_\_\_ \]. (Enter your answer using interval notation.)
**Answer:** Determine the ranges where the function \(f\) descends as we move from left to right. Look at sections going downhill.
**Interpretation from the graph:**
- From the graph, identify the specific x-values:
- \(f\) is increasing on intervals: \((0, a)\) and \((b, c)\)
- \(f\) is decreasing on intervals: \((a, b)\) and \((c, d)\) where specific values of \(a\), \(b\), \(c\), and \(d\) are extracted from the graph intersections and peaks.
**Example of application:**
- Increasing intervals: From \(0\) to, say, around \(1\); and from \(2\) to \(3.5\) (hypot](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8c4e41d9-a3ac-4d29-97cc-72954cf84754%2Fef48c189-fe4b-4141-9f89-8ee31ec5d26b%2Fhbc2w0f.png&w=3840&q=75)
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