Chapter 25. Measures of Central Tendency NIOS Class 10 Mathematics Chapter-Wise Important Questions and Answers
Chapter 25. Measures of Central Tendency | NIOS Class 10 Mathematics Important Questions, Fully Solved Answers, and Chapter-wise Exam Preparation Guide.
Chapter 25. MEASURES OF CENTRAL TENDENCY
Optional Questions and Answers for Algebraic Expressions and Polynomials [1 Mark]
CHECK YOUR PROGRESS 3.1
Short Questions and Answers for Algebraic Expressions and Polynomials [1 or 2 Marks]
gfhhhhhhhhhhhhh
Long Questions and Answers for Algebraic Expressions and Polynomials [ 3 or 4 Mark]
CHECK YOUR PROGRESS 25.1
1. Write formula for calculating mean of n observations x1 ,x2,………,xn
.
Solution: We have,
Mean x=x1+x2+x3+ ………..+ xnn 
=i=1nxi/n
2. Find the mean of first ten natural numbers.
Solution: We have,
Mean
x=1+2+3+4+5+6+7+8+9+1010=5510=5.5 
3. The daily sale of sugar for 6 days in a certain grocery shop is given below. Calculate the mean daily sale of sugar.
|
Monday |
Tuesday |
Wednesday |
Thursday |
Friday |
Saturday |
|
74 kg |
121 kg |
40 kg |
82 kg |
70.5 kg |
130.5 kg |
Solution: We have,
Mean
x=74+121+40+82+70.5+130.5 6
=5186=86.33 kg 
Posted 1 month ago