1) A pie chart shows the distribution of sales in four departments of a store: Electronics: 40%, Clothing: 30%, Groceries: 20%, Furniture: 10% If the total sales for the store is ₹5,00,000, how much did the Electronics department contribute?

2) What type of data is collected from existing sources?

3) The average monthly temperature of a city (in °C) was recorded over six months:| Month | Jan | Feb | Mar | Apr | May | Jun ||————-|—–|—–|—–|—–|—–|—–|| Temperature | 4 | 7 | 12 | 17 | 22 | 26 |(a) Identify the month with the sharpest temperature rise. (b) Estimate the average increase in temperature per month. (c) Predict temperature in July assuming the same rate continues.

4) The following table shows the number of cars passing a certain intersection in 10-minute intervals: 0–10 cars: 2 intervals, 10–20 cars: 3 intervals, 20–30 cars: 4 intervals, 30–40 cars: 1 interval Find the mode of the data.

5) A pie chart shows the spending of a family’s monthly income of ₹60,000 as follows: Rent – 25%, Food – 30%, Education – 20%, Savings – 15%, Others – 10% How much more is spent on Food than on Education?

6) The following data represents the number of hours spent studying by students in a month: 50, 55, 60, 62, 65, 70, 75, 80, 85, 90 What is the range of the data?

7) What does a rising line in a line graph usually represent?

8) In a school, 100 students were surveyed:- 60 like Mathematics – 45 like Science – 25 like both (a) Construct a two-way table. (b) How many like only Mathematics? (c) What is the probability that a student likes Science given they like Mathematics?

9) What is the purpose of calculating the range of a dataset?

10) A bar graph shows monthly sales (in ₹ thousands): January – ₹120, February – ₹135, March – ₹150, April – ₹100 What is the percentage increase from April to March?

11) The following are the marks obtained by a group of students in an exam: 12, 15, 17, 20, 22, 23, 25, 28, 30, 32, 35, 40 Find the interquartile range of the marks.

12) The following table shows the number of hours worked by a group of employees in a week: Hours worked per week: 20-30 (3 employees), 30-40 (8 employees), 40-50 (12 employees), 50-60 (7 employees) Find the mean number of hours worked per week.

13) A box contains 5 red balls, 3 green balls, and 2 blue balls. If one ball is drawn at random, what is the probability of drawing a red ball?

14) The cumulative frequency distribution of exam scores is as follows: Score: 0-10 (3 students), 11-20 (5 students), 21-30 (8 students), 31-40 (7 students), 41-50 (3 students) How many students scored more than 30?

15) The following histogram shows the frequency distribution of the age of employees in a company: 20–30: 5 employees, 30–40: 10 employees, 40–50: 15 employees, 50–60: 10 employees, 60–70: 5 employees How many employees are aged between 30 and 50?

16) A line graph shows the population (in thousands) of a town from 2015 to 2020: 2015 – 120, 2016 – 130, 2017 – 142, 2018 – 150, 2019 – 160, 2020 – 172 Assuming the trend continues, predict the population in 2022.

17) In a quiz, the average marks of Section A with 20 students is 75, and Section B with 30 students is 85. Find the average marks of the entire class.

18) The following data represents the number of hours worked by employees in a week: 35, 40, 45, 45, 50, 50, 50, 55, 60, 60 Find the mean, median, and mode of this data.

19) The data below represents the weight (in kg) distribution of 40 students: 40–45: 5 students, 45–50: 10, 50–55: 15, 55–60: 5, 60–65: 5 Find the median weight of the students.

20) What is the importance of data validation?Data validation ensures data accuracy and quality.