Promote · Phase 5 of 5
Analytics, Retention & Metrics
Every number in YouTube Studio and what it is really telling you. Retention, watch time, click-through and the traps in reading any of them alone.
Category 12 of 16 in the creator glossary · 98 terms
A
Absolute audience retentionaka absolute retentionThe retention curve showing what share of a video's viewers are still watching at each moment of it.Advanced modeaka Studio advanced mode, advanced analyticsThe deeper YouTube Analytics view, opened from the top right, with sortable tables, extra dimensions and comparisons the summary screens leave out.Analytics data delayaka reporting lag, delayed data, data refreshThe gap between what Studio shows now and what the numbers settle at. Realtime figures are estimates and they move.Analytics dimensionaka dimensionThe attribute a metric is broken down by. Date, device type, geography, traffic source and subscriber status are all dimensions.Analytics exportaka CSV export, download report, export dataDownloading a Studio report as a CSV, TSV or Google Sheet so you can work on the numbers outside YouTube.Analytics groupsaka groups, content groupsPrivate bundles of your videos or playlists that YouTube Analytics reports on as a single line, so you can compare formats or series.Analytics segmentaka segment, add segmentA filter in Studio's advanced mode that narrows every chart on the page to one slice, such as subscribers only or a single traffic source.Ask Studioaka Studio AI assistantYouTube Studio's built-in assistant, answering plain-English questions about your own channel's analytics, comments and performance trends.Attributionaka traffic attribution, source attributionDeciding which source gets the credit for a view, a subscriber or a sale, and the reason two dashboards rarely agree on the same number.Audience demographicsaka age and gender, demographics reportThe age and gender split of your audience in Studio, weighted by watch time rather than by number of people.Audience retentionaka retentionThe Studio chart showing what share of viewers are still watching at each moment of a video.Average Percentage Viewedaka APV, average view percentage, average percentage watchedThe share of a video's runtime the average viewer watched. Average view duration expressed as a percentage instead of a length of time.Average time in playlistaka playlist watch time per startA YouTube Analytics metric: the average number of minutes a viewer spends watching videos in a playlist after starting it.Average View Durationaka AVD, average watch timeThe average time viewers spent watching a video, shown as minutes and seconds. Total watch time divided by views.Average views per videoaka average video viewsA channel's mean views per upload, used as the baseline for judging whether one video over or underperformed.Average watch time per vieweraka watch time per viewerTotal watch time divided by unique viewers. It measures the person rather than the video, which is what separates it from average view duration.
C
Card click rateaka card CTR, card clicksThe share of card impressions that turned into a click, reported in Studio separately from the teaser figure people confuse it with.Channel dashboardaka Studio dashboard, dashboardThe home screen of YouTube Studio: a snapshot of the latest upload's performance plus summary cards for the channel as a whole.Channel growth rateaka growth rate, subscriber growth rateThe percentage change in a channel's subscribers, views or watch time across a chosen period, rather than the raw total.Channel pages trafficaka channel page traffic, channel pagesViews that started on your own channel: the home tab, the videos list, a playlist page or the about section.Cohortaka cohort analysis, viewer cohortA group defined by when it arrived, then tracked forward over time so you see behaviour that aggregate numbers hide.Comment rateaka comments per viewComments divided by views, given as a percentage. A rough measure of how strongly a video pushed people to reply.Comparison modeaka compare to, video comparisonThe Compare to control in YouTube Analytics, which puts two videos, two date ranges or two groups on the same chart.Completion rateaka full watch rate, watched to the endThe share of people who started a video and stayed to the end. On YouTube you read it off the end of the retention graph.Concurrent viewersaka CCV, live viewers, average concurrent viewersHow many people are watching a live stream at the same moment, usually quoted as an average or a peak across the broadcast.Confidence intervalaka margin of error, error barsThe range a measured figure plausibly sits in, given how few observations produced it. Small samples make big-looking differences meaningless.Correlation vs causationaka correlation is not causation, causationTwo things moving together at the same time, which on its own says nothing about one of them having caused the other.
D
Device typeaka device report, devicesThe Studio split showing whether views came from mobile, TV, desktop, tablet or console, which changes how packaging reads.Dislikesaka dislike countThe button still works and the press still registers. The public count has been hidden since November 2021; creators see theirs in Studio.
E
End screen click rateaka end screen CTR, end screen element click rateThe share of times an end screen element was shown that somebody clicked it, reported in YouTube Studio.Engaged viewsaka engaged viewThe stricter Shorts metric requiring real watch time, kept under a new name after YouTube redefined the plain view count in 2025.Engagement rateaka engagement %Interactions divided by views or impressions. Every platform defines both halves differently, so the figure only compares against itself.Estimated metricsaka estimated data, estimated viewsFigures Studio shows before the data settles. Views, watch time and revenue all move after publication as invalid traffic gets filtered out.
F
First 24 hoursaka day one numbers, first-day performance, launch windowThe opening day of an upload's life, and the noisiest, most over-read numbers a creator will ever look at.Flat retentionaka retention plateau, flat curveA retention curve that runs level after the opening drop, meaning viewers who got past the first few seconds mostly stayed put.
G
H
I
Impressionsaka thumbnail impressions, video impressionsHow many times your thumbnail was put in front of somebody on YouTube. Distribution, counted before anyone decides to click.Impressions click-through rateaka CTR, click-through rate, impressions CTR, thumbnail CTRThe percentage of times YouTube showed your thumbnail and somebody clicked it, reported per video and per channel in Studio.Impressions funnelaka impressions and how they led to watch time, reach funnelThe Studio chart tracing thumbnail impressions through clicks into views and watch time, so you can see which stage loses people.Intro retentionaka first 30 seconds, 30-second retention, hook retentionHow much of the audience is still watching through the opening seconds, read off the left-hand edge of the retention graph.Invalid trafficaka fake views, artificial views, spam viewsPlays YouTube judges to be automated, incentivised or otherwise inauthentic, which it strips out of your public view count and your revenue.
K
L
Lagging indicatoraka lagging metricA number that confirms something already happened. Subscriber count is the classic one: it moves long after the work that earned it.Last 28 daysaka rolling 28 days, 28-day windowYouTube Studio's default reporting window, covering the four most recent complete weeks of channel data.Leading indicatoraka leading metricAn early metric that moves before the outcome you care about, so you can act while the result is still forming.Lifetime dataaka lifetime, all time, since publishedThe full record of a video or channel since it was published, as opposed to a rolling window such as the last 28 days.Like rateaka likes per view, like-to-view ratioLikes divided by views, used as a rough read on how well a video landed with the people who watched it.
M
Medianaka middle valueThe middle value of a set once you put it in order, far less distorted by one runaway result than the average.Most replayedaka heat map, engagement graph, replay graphThe graph above the progress bar showing which parts of a video get rewatched most, visible to any viewer on eligible videos.Moving averageaka rolling average, smoothed averageAn average taken over a sliding window of recent days, used to show the trend underneath noisy daily numbers.
N
Net subscribersaka net subs, subscriber changeSubscribers gained minus subscribers lost over a period, which is the figure the public counter actually moves by.New viewersaka first-time viewersPeople who watched your channel for the first time inside the date range currently selected in YouTube Analytics.North star metricaka north star, primary metricThe single number a team or creator steers by, chosen because moving it means the thing you actually care about is working.Notification click-through rateaka bell CTR, notification CTRThe share of the bell notifications YouTube sent for your video that viewers actually tapped, shown in Studio's notifications card.
O
P
Peak concurrent viewersaka peak viewers, peak CCVThe highest number of people watching a live stream at the same moment, the usual headline figure for stream size.Percentage pointaka points, ppThe arithmetic gap between two percentages, so 4 per cent rising to 6 per cent is a two point rise and also a 50 per cent increase.Percentileaka percentile rank, top X%A position within a ranked set. Top 10% means the item sits above nine tenths of everything else in that set.Power lawaka power-law distribution, 80/20 distributionA distribution where a few entries account for most of the total, the shape a channel's view counts usually take.
R
Reachaka Reach tabThe Studio analytics section covering how people find a video: impressions, click-through rate, views, unique viewers and traffic sources.Realtime analyticsaka realtime, last 48 hours, last 60 minutesThe Studio card showing estimated views for the last 48 hours and the last 60 minutes, before the numbers have been validated.Regression to the meanaka reversion to the meanThe tendency for an unusually high or low result to be followed by a more ordinary one, with nothing causing the move.Relative audience retentionaka relative retention, above average retentionA Studio report showing how your video holds viewers compared with other YouTube videos of a similar length.Retention cliffaka cliff, retention dropA near-vertical drop in the audience retention graph, showing that a group of viewers all left at the same moment.Retention curveaka retention graph, retention chartThe line showing what share of viewers are still watching at each second, read left to right for the shape an average hides.Retention dipaka dip, valleyA localised drop in the audience retention graph at a moment where a chunk of viewers left or skipped ahead.Retention spikeaka spike, bumpAn upward blip in the audience retention graph, caused by viewers scrubbing back or rewatching the same moment.Returning viewersaka returning audiencePeople who watched your channel in an earlier window and came back during the period you are looking at.
S
Sample sizeaka n, sampleHow much data a conclusion actually rests on. Small samples produce differences that look real and are mostly noise.Search terms reportaka top search terms, search queries, YouTube search termsThe list of queries that put a video in front of people, found in Studio analytics under the YouTube search traffic source.Seasonalityaka seasonal effect, seasonal trendThe repeating calendar pattern in a channel's views, search demand and ad rates that lands at roughly the same point every year.Sharesaka share countHow many times viewers used the platform's share button, which is always lower than the number of times a video actually got passed on.Sharing serviceaka share destinationThe analytics dimension naming which app or method viewers used when they tapped share on your video.Statistical significanceaka significance, stat sigWhether a measured difference is large enough that random variation is an unlikely explanation for it.Subscriber conversion rateaka subs per view, sub-to-view ratio, subscribers per 1000 viewsHow many views a video takes to earn one subscriber, usually written as subscribers gained per thousand views.Subscriber countaka subs, subscribers, sub countThe running total of people subscribed to a channel. It shows publicly as a rounded figure and exactly to the owner in Studio.Subscribers gainedaka subs gained, new subscribersNew subscriptions in a period, broken down by the video, Short, live stream or post the viewer was watching when they subscribed.Subscribers lostaka unsubscribes, subs lostThe number of subscriptions removed from a channel over a given period, reported separately from subscribers gained.Subscription sourceaka subscriber source, where subscribers came fromThe YouTube Analytics breakdown showing where viewers were when they clicked subscribe, by video, Short, live stream or post.Survivorship biasaka survivor biasDrawing lessons only from the channels that made it, while the identical channels that did the same things and stalled stay invisible.
T
U
Unique viewersaka estimated unique viewersYouTube Analytics' estimate of how many separate people watched in a period, counting someone once however many times they came back.UTM parameteraka UTM code, UTM tag, campaign tracking parameterTags added to the end of a link so your own analytics can tell which post, email or platform actually sent the visitor.
V
Validated viewsaka view validation, view count freeze, 301+ viewsViews that have survived YouTube's checks for genuine traffic, which is why the public count lags and can be revised down.Vanity metricsaka vanity metricNumbers that feel good to look at and change nothing about what you do next.Videos added to playlistsaka playlist saves, saves, added to playlistsA YouTube Analytics count of how many times viewers saved a video into a playlist, with Watch Later included in the total.Viewed vs swiped awayaka viewed vs. swiped away, Shorts retention chartThe Shorts figure showing how many people who saw your Short stayed to watch instead of swiping straight past it.Viewing sessionaka watch session, session, YouTube sessionThe continuous stretch of YouTube watching a viewer is in when they reach your video, covering everything before and after it.Viewsaka view count, viewThe headline count of plays a video has picked up. What qualifies differs between long-form and Shorts, which is where people go wrong.Views by subscription statusaka subscribed vs not subscribed, views from subscribers, watch time from subscribersA Studio breakdown splitting views and watch time between people subscribed to your channel and people who are not.Views per playlist startaka playlist views per startThe average number of videos watched once someone starts one of your playlists. A figure near one means they leave after the first.Views per vieweraka average views per viewerViews divided by unique viewers over a chosen period. A loyalty read: how many times the average person came back.
W
Watch timeaka watch hours, estimated minutes watched, total watch timeTotal time viewers spent watching, reported in minutes or hours, and the number behind both YouTube ranking and Partner Programme eligibility.When your viewers are on YouTubeaka viewer activity chart, when your audience is onlineThe Studio heat map showing which hours your existing audience is active on YouTube. Frequently misread as an optimal posting schedule.
Y
Year-over-yearaka YoY, year on yearComparing a period with the same period a year earlier, so seasonal swings do not get mistaken for growth or decline.YouTube Analyticsaka Studio analytics, channel analyticsThe reporting product inside YouTube Studio: views, watch time, retention, traffic sources, audience and revenue, for the channel and every video.YouTube Analytics APIaka Analytics API, Reporting APIGoogle's programmatic route to channel and video metrics, used by dashboards and third-party tools instead of reading Studio by hand.