The y-intercept of the regression line was about -123 (negative 123). Choose the BEST interpretation of that number. We can expect the weight to decrease by 123 ounces when the crown-heel length increases by one inch. We can expect the crown-heel length to be -123 inches when the weight is zero ounces. O We can expect the weight to be -123 ounces when the crown-heel length is zero inches.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 15PPS
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**CROWN-HEEL**

The y-intercept of the regression line was about -123 (negative 123). Choose the BEST interpretation of that number.

- **(Selected Option):** We can expect the weight to decrease by 123 ounces when the crown-heel length increases by one inch.

- We can expect the crown-heel length to be -123 inches when the weight is zero ounces.

- We can expect the weight to be -123 ounces when the crown-heel length is zero inches.

- We can expect the crown-heel length to decrease by 123 inches when the weight increases by one ounce.
Transcribed Image Text:**CROWN-HEEL** The y-intercept of the regression line was about -123 (negative 123). Choose the BEST interpretation of that number. - **(Selected Option):** We can expect the weight to decrease by 123 ounces when the crown-heel length increases by one inch. - We can expect the crown-heel length to be -123 inches when the weight is zero ounces. - We can expect the weight to be -123 ounces when the crown-heel length is zero inches. - We can expect the crown-heel length to decrease by 123 inches when the weight increases by one ounce.
**Fetal Growth Analysis: Understanding Length and Weight**

The focus of this educational content is on understanding the relationship between the crown-heel length and weight of fetuses, measured between 20 to 42 weeks of gestation. This study uses 23 data points, with lengths estimated via ultrasound from the top of the head to the heel.

**Graph Explanation: SLR Basics – Crown-Heel Scatterplot**

The scatterplot displayed above visualizes the data:

- **X-Axis (Horizontal):** Represents the crown-heel length in inches, ranging from approximately 9 to 21 inches.
- **Y-Axis (Vertical):** Represents the weight of the fetus in ounces, ranging from approximately -20 to 140 ounces.
- **Data Points:** Each blue diamond represents a data point, plotting the measured length against the corresponding weight.
- **Linear Model:** A black line illustrates the linear regression model, indicating the trend or relationship between the length and weight. 

The scatterplot aids in observing how fetal length is generally related to weight as gestation progresses. It is clear from the graph that an increase in crown-heel length corresponds to an increase in weight, visualized by the upward trend of the plotted points. This kind of analysis is essential for understanding fetal growth patterns and monitoring health during pregnancy.
Transcribed Image Text:**Fetal Growth Analysis: Understanding Length and Weight** The focus of this educational content is on understanding the relationship between the crown-heel length and weight of fetuses, measured between 20 to 42 weeks of gestation. This study uses 23 data points, with lengths estimated via ultrasound from the top of the head to the heel. **Graph Explanation: SLR Basics – Crown-Heel Scatterplot** The scatterplot displayed above visualizes the data: - **X-Axis (Horizontal):** Represents the crown-heel length in inches, ranging from approximately 9 to 21 inches. - **Y-Axis (Vertical):** Represents the weight of the fetus in ounces, ranging from approximately -20 to 140 ounces. - **Data Points:** Each blue diamond represents a data point, plotting the measured length against the corresponding weight. - **Linear Model:** A black line illustrates the linear regression model, indicating the trend or relationship between the length and weight. The scatterplot aids in observing how fetal length is generally related to weight as gestation progresses. It is clear from the graph that an increase in crown-heel length corresponds to an increase in weight, visualized by the upward trend of the plotted points. This kind of analysis is essential for understanding fetal growth patterns and monitoring health during pregnancy.
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