Question 5 (Page 77-79) - Figure it out (Page 77 to 79) - Chapter 4 Class 6 - Data Handling and Presentation (Ganita Prakash)

Transcript

Question 5 (Page 77-79) Take a blank piece of paper and paste any small news item from a newspaper. Each student may use a different article. Now, prepare a table on the piece of paper as given below. Count the number of each of the letters ‘c’, ‘e’, ‘i’, ‘r’, and ‘x’ in the words of the news article, and fill in the table. (a) The letter found the most number of times is ________. (b) The letter found the least number of times is ________. (c) List the five letters ‘c’, ‘e’, ‘i’, ‘r’, ‘x’ in ascending order of frequency. Now, compare the order of your list with that of your classmates. Is your order the same or nearly the same as theirs? (Almost everyone is likely to get the order ‘x, c, r, i, e’.) Why do you think this is the case?(d) Write the process you followed to complete this task. (e) Discuss with your friends the processes they followed. (f) If you do this task with another news item, what process would you follow?Alright, let’s first complete our table – then answer questions one by one Now, lets answer our questions a. The letter found the most number of times is e b. The letter found the least number of times is x c. List the five letters 'c', 'e', 'i', 'r', 'x' in ascending order of frequency. Now, compare the order of your list with that of your classmates. Is your order the same or nearly the same as theirs? Why do you think this is the case? Ascending order of frequency: x, i, r, c, e Why the order is often similar: Your order will likely be very similar to your classmates' because some letters are naturally used more often than others in the English language. The letter 'e' is the most common letter in English, while letters like 'x', 'q', and 'z' are very rare. So, no matter which English text you pick, you will almost always find more 'e's than 'x's. d. Write the process you followed to complete this task. Selected a sample news sentence. Read through the sentence one letter at a time. Kept a tally for each of the target letters ('c', 'e', 'i', 'r', 'x', and 'a') as I came across them. Counted the final tallies to get the frequency for each letter. Recorded these frequencies in the table. Analyzed the final numbers to answer the questions. e. Discuss with your friends the processes they followed. You should share your method with your friends. Did they use tally marks? Did they highlight the letters first? Comparing your processes can help you find the most efficient way to complete the task. f. If you do this task with another news item, what process would you follow? You would follow the exact same process. The data (the number of each letter) will be different depending on the new article, but the method for collecting and organizing that data remains the same.