i need to answer some questions about statistics

Q1:

A is called "------------------- frequency".?

Q2:

Compute:

Answer:

Q3:

Using the table above, compute the cumulative relative frequency for class B. Round your answer to four decimal places and use decimal notation for percent: for example, for 10.12%, type 0.1012. 

Also there are some more questions in the word which i am going to upploaded

for Q5 in the "Word" i will upload the Excel file to complet the answer.