stem and leaf plot
A visual display of data is called a chart, table or a graph.
Extreme numbers in the data as compared the the rest of the data are called OUTLIERS.
descriptive statistics
It is called division. A fraction is a shorthand display of the operation, and the end result of it is a quotient.
quotient
"Subaudible" frequencies.
A standing wave can occur only at specific frequencies that are called natural frequencies.
gamma rays. they have the shortesst wawvelengths and the highest frequencies.
A spectrum.
Sound waves with frequencies above the normal human range of hearing are called ultrasoundUltrasoundUltrasonic for frequencies higher than a human can hear, and infrasonic for those frequencies below the human threshold of hearing.
To cut off unwanted frequencies, unwanted frequencies are called noise.
Sound waves with frequencies below 20hertz are called infrasonic, while those with frequencies above20000 hertz are called ultrasonic
They are called conductors.
Diffraction.
Frequencies above 20kHz are not audible to humans. Sounds above this frequency are called ultrasound.
Bar Graph
the electromagnetic spectrum