A/B

Either this or

A/B describes a comparison between two versions to determine which performs better.

The term comes from experimental design where variant A is tested against variant B.

Most common in marketing and web development: A/B testing showed the red button got more clicks than the blue one.

The slash indicates the paired alternatives being measured against each other.

comparison

either/or

Mutually exclusive choice

versus · contrast · binary · dichotomy · preference · selection · decision · trade-off · pros and cons · weigh

testing

experiment

Systematic investigation procedure

hypothesis · optimization · sample size · statistical significance · multivariate · landing page · click-through · funnel · user experience · analytics

grading

rating

Assigned evaluative score

ranking · category · pass/fail · honor roll · report card · assessment · evaluation · score · mark · standard

music

chord progression

Sequence of tonal changes

section · structure · melody · harmony · notation · sheet music · repeat · measure · composition · arrangement

blood

blood type

Red cell antigen classification

compatibility · Rh factor · antibodies · plasma · red cells · typing · crossmatch · universal donor · blood bank · donation

Opposites
experimental methodology

A/Bsurvey

Systematic data collection

poll · focus group · anecdotal evidence · gut feeling · guesswork

decision-making approach

A/Bgut instinct

Immediate unreasoned knowing

intuition · guesswork · random selection · shooting from the hip · tradition

research methodology

A/Bsurvey

Systematic data collection

opinion poll · focus group · questionnaire · case study

Family

a

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Abstract · Rated G