How much does it take to update the site content every day?

A lot of SEO in the optimization, the article update in the end to update how much is actually very vacant, we see a lot of SEO articles are said what site must be updated frequently, the best is a daily update and so on, in fact, I want to correct everyone's this wrong idea, the article, does need to update, but not all the industry, All websites have to update a lot of articles every day, so how exactly should we determine the degree of this article update? I suggest
1, refer to the same industry ranked top 10 of the site
Refer to the direct competitor's update frequency, the number of times, to see how many competitors, daily updates, if the daily update of the competitor's average daily update 10, then you can also be based on this value fluctuation.
2, reference industry and determine
Reference industry with the reference to the same industry competitor is not a meaning, I give you an example: Suppose your station is an SEO blog, then according to the whole industry, blog people are unlikely to update a day 5, 6, normal is a few days a, then now you actually a day and also said the past.