In general, what does a spectrometer do?
2. What parts of the electromagnetic spectrum are most commonly analyzed by
spectrometers?
3. What are the parts of a spectrometer of the type used to analyze visible light?
4. How are the types of spectra obtained by spectrometers in the visible range
categorized? What do these different types of spectra look like?

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

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