In the latest release of TurkPrime.com we added many new features and fixes among them 2 additional metrics for every survey:

Topics: amazon mechanical turk, bounce rate, completion rate, mturk, turkprime

## Problem:

How can you increase Amazon Mechanical Turk HIT Worker participation rates and speed completion of a HIT? This is particularly an issue with HITs that have a large number of required participants or have Qualifications that limit the number of qualified Workers

Topics: amazon mechanical turk, completion rate, demographics, HIT, increase participation, qualification, speed, turkprime

## A Simple Formula for Predicting the Time to Complete a Study on Mechanical Turk

## Overview

### The simple formula

We describe a general formula for predicting the time it takes Workers to complete survey studies on MTurk. The average Worker takes 10.3 seconds to answer a single question. This means that a study with 60 questions should take approximately 10 minutes. At $6 per hour the appropriate pay rate for a 60 question survey would be $1.

Topics: amazon mechanical turk, completion rate, mechanical turk

## Determining Completion Rate and Dropout Rate on Mechanical Turk

## What is the completion rate and dropout rate?

Dropout rate is defined as the percentage of participants who start taking a study but do not complete it. Dropout rate is sometimes referred to as attrition rate, and is the opposite of completion rate (dropout rate = 100 – completion rate). On MTurk, completion rate is defined as the number of Workers who submit a HIT divided by the number of Workers who accept the HIT. Note that, for the definition of completion rate used here, Rejected Workers are counted as completes.

Topics: amazon mechanical turk, completion rate, dropout rate, mechanical turk