Descriptive statistics. This page shows examples of how to obtain descriptive statistics, with footnotes explaining the output. The data used in these examples were collected on 200 high schools students and are scores on various tests, including science, math, reading and social studies (socst).
Frequency is the rate of recurrence of a cyclic or periodic event. In physics, you can observe periodicity in rotations, oscillations, and waves. For an analog or digital waveform, you can invert the signal period to obtain the frequency.The smaller the period, the higher the frequency and vice versa.This is illustrated in Figure 1, with the top waveform having the lowest frequency and the bottom waveform having the highest frequency.or an analog or digital waveform, you can invert the signal period to obtain the frequency. The smaller the period, the higher the frequency and vice versa. This is illustrated in Figure 1, with the top waveform having the lowest frequency and the bottom waveform having the highest frequency.
Itâs a game-changing technology. Hereâs how it works. CHIRP is a frequency-modulated sonar pulse that overcomes the limitations of current technology, which relies on a single-frequency pulse bouncing off fish and the bottom.Traditional sonar operates on either 50 kHz, for deepwater fish finding, or 200 kHz, in shallower water.tâs a game-changing technology. Hereâs how it works. CHIRP is a frequency-modulated sonar pulse that overcomes the limitations of current technology, which relies on a single-frequency pulse bouncing off fish and the bottom.