frequency

英 ['friːkw(ə)nsɪ] 美['frikwənsi]

• n. 频率；频繁

1. the number of occurrences within a given time period (usually 1 second);

"the frequency of modulation was 40 cycles per second"

2. the ratio of the number of observations in a statistical category to the total number of observations

3. the number of observations in a given statistical category