Question

Following is the distribution of marks (out of 25) obtained by 10 students in Physics and Mathematics. No. Physics(X )iMathematics(Y )i2 Xi2 YiXiYi1 18 21 324 441 3782 20 23 400 529 4603 11 14 121 196 1544 20 23 400 529 4605 14 17 196 289 2386 15 18 225 324 2707 13 16 169 256 2088 16 19 256 361 3049 17 20 289 400 48010 20 23 400 529 460Total 164 194 2780 3854 3412Draw a scatter diagram for all the 10 students and calculate the correlation between marks of Physics and Mathematics.​

Answer 1

Step-by-step explanation:

The electronic configuration of Ca is …………

a) 2,8,8,2 b) 2,8,4

c)2,8,1 d) 2,6

2. The work done on an object does not depend on…………

a) force b) the angle between force and displacement

b) displacement c) initial velocity of the object

1. 3. The unit of current is……………….. kaliakoir

a) Ohm b) Ampere

c) Coulomb d) Joule

4. The capacity of an elemenvhvyct to combine is called its …………..

a) valency b) Mass