Mathematics is like music – Enjoy it!!!
Question 5: A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows: 0.03 0.08 0.08 0.16 0.05…
Read MoreQuestion 4: The heights of 50 students, measured to the nearest centimetres, have been found to be as follows: 161 150 154 162 164 171 153 159 161 154 152 153 161 159 162 165 168 165 158 170 162…
Read MoreQuestion 3: The relative humidity (in %) of a certain city for a month of 30 days was as follows: 98.1 98.6 89.2 92.3 96.2 92.1 99.2 90.3 97.1 93.5 84.9 90.2 86.5 95.3 92.9 96.3 92.7 95.1 97.2 93.3…
Read MoreQuestion 2: The distance (in km) of 40 engineers from their residence to their place of work were found as follows: 5 3 10 20 25 11 13 7 12 31 19 10 12 17 18 11 32 17 16…
Read MoreQuestion 1: The blood groups of 30 students of Class VIII are recorded as follows: A,B,O,O,AB,O,A,O,B,A,O,B,A,O,O, A,AB,O,A,A,O,O,AB,B,A,O,B,A,B,O. Represent this data in the form of a frequency distribution table. Which is the most common, and which is the rarest, blood group…
Read MoreStatistics – Bar graph, Histogram & Frequency polygon In this tutorial you will learn how to draw few very important and basic graphs in statistics. It is bit lengthy video that covers different scenarios like uniform classes, varying width classes,…
Read MoreExample 3: 100 plants each were planted in 100 schools during Van Mahotsava. After one month, the number of plants that survived were recorded as : 95 67 28 32 65 65 69 33 98 96 76 42 32 38…
Read MoreExample 1: Consider the marks obtained by 10 students in a mathematics test as given below: 55 36 95 73 60 42 25 78 75 62 The data in this form is called raw data. By looking at it in…
Read MoreQuestion 1: Give five examples of data that you can collect from your day-to-day life. Question 2: Classify the data in Q.1 above as primary or secondary data. Class 9 | Home Ex: 14.2 | Question 1
Read MoreStatistics This tutorial is recommended for the beginners to watch to understand the following: What is statistics Data Information Frequency distribution table Ungrouped Grouped Class Intervals Overlapping Non-overlapping Class limits Upper class limit Lower class limit
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