Class 10 Exam > Class 10 Notes > Mathematics (Maths) Class 10 > Unit Test: Statistics
Unit Test: Statistics | Mathematics (Maths) Class 10 PDF Download
Time: 1 hour
M.M. 30
Attempt all questions.
- Question numbers 1 to 5 carry 1 mark each.
- Question numbers 6 to 8 carry 2 marks each.
- Question numbers 9 to 11 carry 3 marks each.
- Question number 12 & 13 carry 5 marks each.
Q1: If the mean of first n natural numbers is 3n/5, then the value of n is: (1 Mark)
(a) 3
(b) 4
(c) 5
(d) 6
Q2: The class interval of a given observation is 10 to 15, then the class mark for this interval will be: (1 Mark)
(a) 11.5
(b) 12.5
(c) 12
(d) 14
Q3: If the sum of frequencies is 24, then the value of x in the observation: x, 5,6,1,2, will be: (1 Mark)
(a) 4
(b) 6
(c) 8
(d) 10
Q4: Find the class marks of classes 10-25 and 35-55. (1 Mark)
(a) 17.5, 20
(b) 18. 40
(c) 17.5, 42
(d) 17.5, 45
Q5: The method used to find the mean of a given data is(are): (1 Mark)
(a) Direct Method
(b) Assumed Mean Method
(c) Step Deviation Method
(d) All of the above
Q6: If the mode of the following data is 7, then find the value of k. (2 Marks)
2, 4, 6, 7, 5, 6, 10, 6, 7, 2k + 1, 9, 7, 13
Q7: The mean of 6 numbers is 16 with the removal of a number the mean of remaining numbers is 17. Find the removed number. (2 Marks)
Q8: The mean of the following frequency distribution is 70. Find the missing frequency x. (2 Marks)
Q9: Find the mode of the following distribution of marks obtained by the students in an examination:
Given the mean of the above distribution is 53, using emperical relationship estimate the value of its median. (3 Marks)
Q10: Find the missing frequency (x) of the following data if its mode is ₹240. (3 Marks)
Q11: Consider the following distribution of daily wages of 50 workers of a factory. (3 Marks)
Find the mean daily wages of the workers of the factory by using an appropriate method.
Q12: The mean of the following frequency distribution is 62.8 and the sum of all frequencies is 50. Compute the missing frequencies f1 and f2. (3 Marks)
Q13: Find the mean, mode and median of the following data: 
You can find the solutions of this Unit Test here: Unit Test (Solutions): Statistics
The document Unit Test: Statistics | Mathematics (Maths) Class 10 is a part of the Class 10 Course Mathematics (Maths) Class 10.
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FAQs on Unit Test: Statistics - Mathematics (Maths) Class 10
| 1. What are the basic concepts of statistics that every student should know? |  |
Ans. Every student should understand key concepts such as mean, median, mode, variance, standard deviation, and distribution. These concepts form the foundation of statistical analysis and help in interpreting data effectively.
| 2. How can I improve my statistical problem-solving skills? | |
Ans. To improve your statistical problem-solving skills, practice regularly with different types of problems, utilize online resources and tutorials, and engage in study groups. Understanding real-world applications of statistics can also enhance your skills.
| 3. What are common statistical methods used in data analysis? | |
Ans. Common statistical methods include descriptive statistics, inferential statistics, regression analysis, hypothesis testing, and ANOVA. Each method serves different purposes and helps in analyzing data to draw meaningful conclusions.
| 4. How is statistical significance determined in hypothesis testing? | |
Ans. Statistical significance is determined by calculating a p-value, which indicates the probability of observing the data if the null hypothesis is true. If the p-value is less than a predetermined significance level (usually 0.05), the result is considered statistically significant.
| 5. What role does sampling play in statistics? | |
Ans. Sampling is crucial in statistics as it allows researchers to draw conclusions about a population without surveying every individual. A well-designed sample can provide accurate insights and reduce the time and cost associated with data collection.
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