INFO-I300 Test 1 Review

For task success metrics, "levels of success" indicates that:

The results can include one or more types of partial success

A pie chart is appropriate only if:

the parts add up to 100%

If the 90% confidence interval around a mean is 30 to 60, then:

there is 90% certainty that the true population mean falls within this interval

Learnability metrics involve:

Collecting the same metric for repeated performance of a task

For a bar graph, if a continuous variable is on the vertical axis, then this axis should normally start at:

0

Which of the following statements is true about statistics? A measure of central tendency is a descriptive statistic. More than two samples cannot be compared at one time. Comparing samples cannot be done with Excel. You can calculate a mean value of nominal data.

A measure of central tendency is a descriptive statistic.

Time on task is typically used as:

A metric of efficiency

The simplest and most common way to measure task success is:

Binary success

According to the Measurement presentation, a common measurement for effectiveness of user interactions with a product is:

Can users complete tasks without assistance.

A high-fidelity prototype is:

Close to the appearance and interactivity of the expected final product.

The primary approach to measurement of usability and user experience discussed in the Measurement video is:

Conducting a usability test

UX metrics collected in a study are considered:

Dependent variables

Formative usability tests are typically conducted:

Early in the development process with a low-fidelity prototype

What were the three main components of the ISO 9241 definition of usability presented in the UX Metrics video?

Effectiveness, Efficiency, Satisfaction

According to the authors, focus groups and usability tests are comparable methods for usability assessment and can be interchanged.

False

Performance and satisfaction metrics always track each other very closely for all studies.

False

Time on task is inappropriate for products where tasks are performed repeatedly by a user.

False

According to the book, which of the following characteristics must a UX metric have?

It is observable in some way

When there are reasonable shades of gray with task success (for example, a participant may complete the task, but make several errors) a suitable method of reporting is:

Levels of success

Which of these terms is used to refer to a specific measure of central tendency?

Mean

According to the Measurement video, measurement is important for businesses because:

Measurement leads to control and opportunity for improvement.

Match name to description: Ordinal: Interval: Ratio: Nominal: Ordered groups of categories Continuous data, but no true zero point Continuous data with true zero point Unordered groups or categories

Ordinal: Ordered groups or categories Interval: Continuous data, but no true zero point Ratio: Continuous data with true zero point Nominal: Unordered groups or categories

Usability tests conducted early in development with low-fidelity prototypes of a website are typically focused on:

Problem discovery

In Chapter 3, which type of usability study has the goal of identifying major usability issues?

Problem discovery (maybe)

Section 1.3 of the book says "User experience metrics are a key ingredient in calculating a ROI." In this statement, ROI means:

Return on investment

Which of the following is a way to use UX data to evaluate how well a product meets its objectives?

Summative Testing

Which of the following is true about ordinal data?

The intervals between ordinal data categories are not meaningful.

Which of the following is true about testing and errors?

The most common way of organizing error data is by task.

The Butterfly Ballot example describes a case in which it is expected that errors occurred that resulted in: Multiple choice question

The outcome of the task was not what the voter intended

According to the UX Metrics video, a UX metric reveals something about the personal experience of the human using a product or system.

True

According to the authors, most managers see the value of measurement.

True

The authors state that the most important rule about measuring time on task is perhaps:

When to turn the clock on and off

Which myth about UX metrics is dispelled by examples in which the right design choice is counterintuitive?

You can just trust your gut

According to the book, EyeTrackShop's technology collects eye movement data using:

a web cam

According to the authors, online surveys: (select one answer)

suffer from the drawback that data received from each participant is somewhat limited.