As aubrey watches this merry-go-round for a total of 2 minutes, she notices the black horse pass by 15 times. what is the period of the black horse?

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?