thinQmaster Virtual testing partner Adaptive practice exams that find your weak spots and drill them. Every answer explained. From $69
Enroll

thinQmaster

Find your exam

Five questions free, before you decide.

Step 1 · choose a vendor

In one of our camps? Your practice exams come with the tuition — they are on your study page already.

Data & Analytics · Intermediate

Time Series

A sequence of observations recorded at successive points in time, often at regular intervals.

Definition

Time series analysis must account for trend, seasonality, cycles and autocorrelation. Train/test splits must respect time order, never shuffling.

Exam tip

Never split time series data randomly; use time-ordered holdouts.

Related terms