1. caelyn wanted to find out what shampoo made her hair the shiniest. everyday
her hair with different shampoos and then rated how shiny her hair was, on as
she used pantene, herbal essences, l'oreal, and just water.
rhair the shiniest. everyday she washed
how shiny her hair was, on a scale from 1-10.
a. independent variable (iv):
b. dependent variable (dv):
c. control:
d. constants: