The Collection and Organisation of data are important as it helps people collect important information in a systematic manner and helps to organize it better for future reference. Data is simply important information which is stored in the form of numerical figures while raw data is the information obtained in its original form.
Mean or Arithmetic mean can be defined as the sum of the values divided by the number of values. The value which separates the lower value from the higher value is called the Median, whereas Mode can be defined as the data values that occur most often in a set.
Get complete RS Aggarwal Class 7 Solutions Chapter 21 Collection and Organisation of Data (Mean, Median and Mode).