Frequency,averages,boxplots,

• How to complete this question


  1.Find the midpoint of the time 2. go along the x axis and find the midpoint then go up the y axis to the frequency number you need3.Then connect the points from the first point to last one4.Then to find the modal class interval we need to look on the frequency collumn to find the number with the highest then the time for that will be your final answer

  
• What is a difference between frequency polygon and cumalitive frequency

  In a frequncy polygon you use the midpoint for the x axis and frequency for y-axis,In cumulative frequency you use the end number for x axis and cumulative frequency column for y axis
• Remember when using cumalitive frequency chart after finding median by looking on y axis go along and down to x axis to find correct number that you need
• How to solve this question

  1.Find midpoint(60+70/2)2. Go across x axis and find mp number then go up y axis to find the number it lays on