From Pinterest Analytics, which metric indicates the ratio of clicks to impressions?

• A. Number of Impressions
• B. Follower Growth
• C. Effective Click-Through Rate
• D. Saves

Answer: (C)

The main idea here is understanding how engagement per exposure is measured. The ratio of clicks to impressions shows how often people who see a pin actually click it. On Pinterest Analytics, this is called the Effective Click-Through Rate, which is computed as clicks divided by impressions and usually shown as a percentage.

Number of Impressions simply counts how many times the pin appeared, not how many clicked. Follower Growth tracks changes in your audience size, not engagement per view. Saves reflect how many users saved the pin, a different type of interaction.

So, for the ratio of clicks to impressions, the best-fitting metric is the Effective Click-Through Rate.