a - Frequencyb - Percentagec - Relative frequencyFill in the appropriate letter (from above) of the term defined in each of the parts below.a) The number of observations that fall in a classanswer:b) The relative frequency of a class multiplied by 100answer:c) The ratio of the frequency of a class to the total number of observationsanswer:

Answer:Step-by-step explanation:When we collect a large data we may find a single entry repeated.  In these cases we prepare frequency distribution with x = the item in one column and f = the no of times it repeats i.e. frequency in other column.Similarly for class intervals also, we write as frequency to the right side of interval column which gives no of items which fall within the class.This process ensures compact presenting of data.Hence we havea)The number of observations that fall in a class answer:   Frequency b) The relative frequency of a class multiplied by 100 answer:   Percentage.  Because when we express probability as a percentage we get total 100 c) The ratio of the frequency of a class to the total number of observations answer:  Relative frequency(Relative frequency also known as probability is frequency/total entries)