Question

consider the following studies:
study 1: a researcher at a marketing firm wants to determine how popular a product is so he asks people to fill out a questionnaire in which he determines 15 out of 100 people use the product.
study 2: a clinic gives a certain drug to a group of patients and a placebo to another group to find out if the drug has an effect on the patients illness.
select the correct statement.
study 1 and study 2 are both observational studies.
study 1 and study 2 are both experimental studies.
study 1 is an experimental study while study 2 is observational.
study 1 is an observational study while study 2 is experimental.
question #11
the number of employees at a company is determined. identify the type of data.
categorical data
saved discrete data
continuous data
qualitative data

Explanation:

• Study 1: The researcher is simply observing and collecting data (asking people to fill out a questionnaire about product usage) without manipulating any variables. This is characteristic of an observational study.
• Study 2: The clinic is actively manipulating the treatment (giving a drug to one group and a placebo to another). This manipulation of variables is the key feature of an experimental study.

• Data type for number of employees:
• Categorical data classifies data into categories (e.g., gender: male/female). The number of employees is not a category.
• Discrete data consists of distinct, countable values. The number of employees is a countable quantity (e.g., 100 employees, 200 employees - you can't have a fraction of an employee in this context).
• Continuous data can take any value within a range (e.g., height, weight). The number of employees is not in a continuous range in the sense that it's counted in whole - number increments.
• Qualitative data is non - numerical and descriptive (e.g., colors, textures). The number of employees is numerical.

Answer:

• For the studies: Study 1 is an observational study while Study 2 is experimental.
• For the data type: Discrete data.