Question 1
1 Mark
The ages of 60 children in a class are given in the frequency distribution table below. From this, find their mean age.
Options
Option A
15 years
Option B is correct
13.6 years
Option C
13 years
Option D
14.5 years
Questions & Answers: "Statistics and Data Handling"
Complete guide to "Statistics and Data Handling" for Math students. Below you will find important questions and model answers to help you prepare.
4 Questions
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We are building a dedicated quiz for this topic, but you can test your skills on a similar concept: Geometry (Angles, Circles, and 3D Nets) - Scholarship-VIII Practice Set 1.
Question 2
1 Mark
The weight of 20 students from a class is given in the frequency table. Find the mean of their weights. (Select two correct alternatives)
Options
Option A
20 kg 50 gm
Option B is correct
20.5 kg
Option C
20.05 kg
Option D is correct
20 kg 500 gm
The following pie diagram represents number of fruit plants planted by a farmer. Observe the figure and select the correct alternative to answer the questions.
Question 3
1 Mark
Find the total number of trees planted by the farmer.
Options
Option A is correct
1120
Option B
1020
Option C
1220
Option D
1040
Explanation
From the pie chart, the percentages for Lemon, Mango, Chickoo, and Orange are 15%, 30%, 20%, and 10% respectively. The sum of these percentages is 15% + 30% + 20% + 10% = 75%. The remaining percentage corresponds to Coconut Tree, which is 100% - 75% = 25%. We are given that the number of Coconut Trees is 280. If 25% of the total trees is 280, then the total number of trees (T) can be found by: 0.25 * T = 280 => T = 280 / 0.25 = 280 * 4 = 1120.
Question 4
1 Mark
Find the number of trees bearing multi-seed fruits.
Options
Option A
896
Option B is correct
504
Option C
208
Option D
616
Explanation
First, we need to determine the total number of trees, which was calculated in the previous question (ai-3) as 1120. Next, we identify which of the listed fruits bear multi-seed fruits: Lemon (multi-seed), Mango (single-seed), Coconut (single-seed), Chickoo (multi-seed), Orange (multi-seed). So, the multi-seed fruits are Lemon, Chickoo, and Orange. Their respective percentages are Lemon 15%, Chickoo 20%, and Orange 10%. The total percentage of multi-seed fruits is 15% + 20% + 10% = 45%. The number of trees bearing multi-seed fruits is 45% of the total trees: 0.45 * 1120 = 504.