Lectures

Question 1

horizontal prototyping

Answer 1

Demonstrates the feature spectrum
* without full implementation of all individual features

Question 2

vertical prototyping

Answer 2

demonstrate a specific feature
the details of the function/feature are shown/implemented

Question 3

low-fi prototype

Answer 3

Check ideas and interaction flow
Fast, cheap and easy to change

Question 4

high-fi prototype

Answer 4

Looks & feels like the final product
restricted functionality

Question 5

mean

Answer 5

actual average,

can only be used with interval and ratio data

Question 6

median

Answer 6

when putting all number in a row, the middle number

can be used with ordinal, interval and ratio data

Question 7

mode

Answer 7

the most frequent occuring number in data set,

describes how most people behave,

can be used for nominal data

Question 8

quantile

Answer 8

‘Cut points’ that divide a sample of data into groups containing (as
far as possible) equal numbers of observations.

Question 9

quartile (quantile of 4)

Answer 9

Values that divide a sample of data into 4 groups containing (as far
as possible) equal numbers of observations

Question 10

percentile (quantile of 100)

Answer 10

Values that divide a sample of data into 100 groups containing (as
far as possible) equal numbers of observations

Question 11

hypothesis

Answer 11

prediction of the result of an experiment

Question 13

Hick-Hyman law (Hick’s law)

Answer 13

describes the relationship between the number of choices available and the time it takes to make a decision

Question 14

goms model

Answer 14

Goals: description of what a user wants to accomplish
Operators: Possible actions in the system
Methods: Sequences of operators that achieve a goal
Selection rules: Rules that define when a user employs which method (among
alternatives)