set 1: Organising Data A set of tally marks have A. 10 counts C. 4 counts B. 5 counts D. 6 counts -ods One represents 100 persons Sunday Monday Tuesday Wednesday Thursday Friday Saturday A. On which day did the maximum number of people visit the exhibition? B. On which 2 days was the total number of people who visited the exhibition fewer than the number of people who visited on Thursday? C. Draw a bar graph for the same data with a scale of - 50 people. @ The data can be organised in tables using tally marks @ The following is a list of activities Grade 6 students like. Display the data in a table using tally marks. a Art, Computer, Sports, Computer, Music, An, Music, Art, Computer, Music, Art, Sports, Art, Music, Computer, Art, Music, Computer, Art, Sports, Music, Sports, Computer, Music, An, Sports, Music, Sports, Music, Music, Computer, Sports, Music, Sports, Music, Computer, Music, An, Sports, Music Organise the following marks obtained by 20 students in a maths test in a table. 15 18 12 15 16 10 18 14 15 12 10 15 18 16 12 10 18 14 12 18 FOTs5 These are the favourite fruits of 30 students. Display the data in a table using tally marks Apple and Orange, Papaya, Grapes, Banana, Grapes and Banana, Grapes and Banana, Banana, Apple and Orange, Grapes and Banana, Apple and Orange, Papaya, Grapes, Banana, Apple and Orange, Papaya, Grapes, Grapes, Papaya, Grapes, Grapes and Banana, Papaya, Banana, Papaya, Apple and Orange, Grapes, Grapes, Grapes and Banana, Grapes, Grapes and Banana, Apple and Orange cars The pictograph shows the number of books in a library. If I book represents 50 books, then answer the following. Book Collection History Mystery Fairytale Biography Non-Fiction A. What is the total number of books in the library? B. How many more fairytale books are there than biography books? C. Redraw this pictograph with a scale of - 20 books. D. Draw a bar graph for the same data and scale. Set 2: Pictograph and Bar Graph O Draw a pictograph and bar graph for 03 in Set 1. O Study the pictograph showing the number of people who visited an exhibition during a week and answer these questions: yrrnram Block 20. Data Handling 77
Answers
ANSWER EXPLANATION: In order to solve this problem, you should create two equations using two variables (x and y) and the information you're given. Let x be the number of left-handed female students and let y be the number of left-handed male students. Using the information given in the problem, the number of right-handed female students will be 5x and the number of right-handed male students will be 9y. Since the total number of left-handed students is 18 and the total number of right-handed students is 122, the system of equations below must be true:
x+y=18
5x+9y=122
When you solve this system of equations, you get x=10 and y=8. Thus, 5*10, or 50, of the 122 right-handed students are female. Therefore, the probability that a right-handed student selected at random is female is 50122, which to the nearest thousandth is 0.410.
The final answer is A.