Construct a frequency polygon for the following data.
`{:("Calss Interval","Frequency"),(10-14,5),(15-19,8),(20-24,12),(25-29,9),(30-34,4):}`

Construct a combined histogram and frequency polygon for the following frequency distribution : {:("Calss Interval","Frequency"),(10-20,3),(20-30,5),(30-40,6),(40-50,4),(50-60,2):}

Construct a cumulative, frequency distribution table from the frequency table given below : {:("Calss Interval","Frequency"),(0-8,9),(8-16,13),(16-24,12),(24-32,7),(32-40,15):}

Construct a cumulative frequency distribution table from the frequency table given below : {:("Calss Interval","Frequency"),(1-10,12),(11-20,18),(21-30,23),(31-40,15),(41-50,10):}

Construct a frequency distribution table from the following cumulative frequency distribution : {:("Calss Interval","Frequency"),(5-10,18),(10-15,30),(15-20,46),(20-25,73),(25-30,90):}

Construct a frequency distribution table from the following cumulative frequency distribution : {:("Calss Interval","Cumulative Frequency"),(10-19,8),(20-29,19),(30-39,23),(40-49,30):}

Construct a frequency distributions table from the following cumulatvive frequency table. {:( " Class interval " , ," Cumulative Frequency "),( 0-9 , , 15),(10-19, ,23),(20-29, ,38),(30-39,, 56),(40-49,,68),(50-59,,90 ):}

Draw a cumulative frequency curve (ogive) for each of the following distributions : {:("Class interval ", 10-15, 15-20, 20-25, 25-30, 30-35, 35-40),("Frequency " ," "10, " " 15, " " 17, " " 12, " " 10, " " 8):}

Construct a frequency polygon for the following distribution, using a graph sheet : {:("Marks",30-40,40-50,50-60,60-70,70-80,80-90),("No. of students"," "6," "15," "28," "34," "18," "8):}

The mode of the following distribution is {:("Class interval :",1-5,6-10,11-15,16-20,21-25),("Frequency :" ,4,7,10,8,6):}

Construct a frequency polygon for the following data: Age (in year) 0-2 2-4 4-6 6-8 8-10 10-12 12-14 14-16 16-18 Frequency 2 4 6 8 9 6 5 3 1