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How many kinds of mathematical statistics are there in primary schools? What are the characteristics?
I. Bar charts

The characteristics of the bar chart:

(1) enables people to see the size of each data at a glance.

(2) Differences between data are relatively easy.

(3) Quantity can be clearly expressed.

Second, the broken line statistical chart

Features: (1) can display the changing trend of data and reflect the changing situation of things.

Third, the fan-shaped statistical chart

1) indicates the percentage of parts in the whole with the area of the sector.

2) It is easy to display the size of each group of data relative to the total.