# Interrogation

## Objective

Use statistical analysis to determine if the phrasing of a yes-no question has an effect on the answer.

## Difficulty

Procedure: Easy

Concept: Easy

## Concept

In this experiment, we want to determine if the connotation of a question affects the answers given by a random sample of people. For example, consider the following questions:

Do you think the current president has implemented *effective* foreign policies?

Do you think the current president has implemented *ineffective* foreign policies?

## Motivation

Polls are a very common method to gather data from a population. However, measures should be taken to gather *unbaised* data. For more information on statistical biases, click here.

## Hypothesis

Do you think that the connotation of the question will influence the answers given? Why or why not?

## Procedure

- Formulate a question to test your hypothesis.
- Determine the number of people who you will poll for the positive and negative connotatation of the question.
- Conduct your poll (be sure to get a random sample!). Also, be sure to fill out the appropriate consent forms.
- Enter the data into excel and run a t-test.

## Analysis

Does the p-value of the t-test show a significant difference?

## Extensions

Try running this experiment with other questions. You may be able to design an experiment that will work for multiple-choice questions or questions that require people to rate on a certain scale. Use our Statistics Guide if necessary.