The average number of visitors to the West Lake in May was 5 186. How many people are there?

The average number of visitors to the West Lake in May was 5 186, about 5,200.

The parsing process is as follows:

West Lake is a famous scenic spot in China. The average number of tourists per day is 5 186, and 5 186 is rounded to the nearest hundred. We need to see the next one out of a hundred, that is, ten.

Because the decimal digit of 5 186 is 8, which is greater than 4, we move forward to 1, from which we can get that 5 186 is rounded to one percent, which is 5200.

Extended data

Four-shed 65% in pairs is an accurate counting method. Here "four" means less than five, "six" means more than five, and "five" means the rounded mantissa. Look at the one in front, the odd ones don't even get in. For example, 1.25 keeps one decimal place, and the factor of 2 is even, so it is 1.2. Another example is 1.35, because 3 is an odd number, it is 1.4.

From the statistical point of view, "four families, six households and 50% pairs" is more scientific than "rounding", which makes the rounded results bigger and smaller and more uniform, instead of answering every Friday like rounding, resulting in a large number of results.

For example:

1.15+1.25+1.35+1.45 = 5.2. If one decimal place is rounded, it is calculated as1.2+/kloc-0.

According to the calculation of "four houses in six and fifty pairs",1.2+1.2+1.4+0.4 = 5.2, the rounding result can better reflect the actual result.