Final answer:
The click-through rate (CTR) is the key metric for measuring how effective campaigns are at driving traffic to a site, reflecting the frequency of ad clicks by viewers.
Step-by-step explanation:
To understand how campaigns drive traffic to your site and measure how often people who see your ad end up clicking it, you would look at the click-through rate (CTR). The CTR is a key metric in internet marketing to evaluate the effectiveness of an advertisement. To ensure an accurate measurement of this metric, an internet marketing company may conduct a survey to estimate the proportion of customers clicking ads on smartphones.
They would calculate the necessary sample size to achieve a 90 percent confidence level that the estimated proportion is within a certain margin of error of the true population proportion.To see how often people who see your ad end up clicking it, you would look at the 'click-through rate' (CTR) metric. CTR measures the percentage of ad impressions that result in clicks. It helps you analyze the effectiveness of your ad campaign in generating user engagement. For example, if your ad receives 1000 impressions and gets 50 clicks, the CTR would be 5%.