Questions: A researcher wonders if a new cancer treatment leads to a higher five-year survival rate for people diagnosed with a certain type of lung cancer. She creates an experiment where the experimental group gets the new treatment and the control group gets the traditional treatment. After five years, she gathers data on the people in each group to see which cancer patients survived and which did not. (a) Identify the explanatory variable. Select the best answer. Survival status of the patient after five years (survived or did not survive) Treatment status of the patient (control group or experimental group) Cancer status (diagnosed with cancer or no cancer) The years of study (1,2,3,4, or 5) (b) Identify the response variable. Select the best answer. Survival status of the patient after five years (survived or did not survive)

A researcher wonders if a new cancer treatment leads to a higher five-year survival rate for people diagnosed with a certain type of lung cancer. She creates an experiment where the experimental group gets the new treatment and the control group gets the traditional treatment. After five years, she gathers data on the people in each group to see which cancer patients survived and which did not. (a) Identify the explanatory variable. Select the best answer. Survival status of the patient after five years (survived or did not survive) Treatment status of the patient (control group or experimental group) Cancer status (diagnosed with cancer or no cancer) The years of study (1,2,3,4, or 5) (b) Identify the response variable. Select the best answer. Survival status of the patient after five years (survived or did not survive)
Transcript text: A researcher wonders if a new cancer treatment leads to a higher five-year survival rate for people diagnosed with a certain type of lung cancer. She creates an experiment where the experimental group gets the new treatment and the control group gets the traditional treatment. After five years, she gathers data on the people in each group to see which cancer patients survived and which did not. (a) Identify the explanatory variable. Select the best answer. Survival status of the patient after five years (survived or did not survive) Treatment status of the patient (control group or experimental group) Cancer status (diagnosed with cancer or no cancer) The years of study $(1,2,3,4$, or 5$)$ (b) Identify the response variable. Select the best answer. Survival status of the patient after five years (survived or did not survive)
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Solution

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Solution Steps

Step 1: Identify the Explanatory Variable

The explanatory variable in this study is the treatment status of the patient, which can be categorized into two groups: the control group and the experimental group. This variable is manipulated to observe its effect on the outcome.

Step 2: Identify the Response Variable

The response variable is the survival status of the patient after five years. This variable indicates whether the patient survived or did not survive, serving as the outcome of interest in the study.

Final Answer

The explanatory variable is the treatment status of the patient (control group or experimental group), and the response variable is the survival status of the patient after five years (survived or did not survive).

\(\boxed{\text{Explanatory Variable: Treatment status; Response Variable: Survival status}}\)

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