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__________ refers to a group of techniques for fitting and studying the straight-line relationship between two variables.
Assertion (A): When there is an evidence of a linear relationship between two variables, it may not always mean an independent-dependent relationship between the two variables.
Reason (R): The casual relationship between the two variables may not imply a reasonable theoretical relationship between the two.
The table shows the marks obtained of three students before and after studying mathematics in a group. Name Marks obtained before studying in group(out of 100) Marks obtained after studying in group(out of 100) Mansi 67 79 Harman 54 60 Faisal 63 74 which is the approximate average marks obtained by all the three students together in each type of study?
Suppose, you got a situation where you find that your linear regression model is under fitting the data. In such situation which of the following options would you consider?
1. I will add more variables
2. I will start introducing polynomial degree variables
3. I will remove some variables
The following question has three statements. Study the question and the statements and decide which of the statement (s) is/are necessary to answer the question. How many students are studying biology? I. The number of students studying biology and zoology presently in ratio 5: 8respectively  II. The number of students studying zoology this year and that last year is 8: 9 respectively. III. The number of students who studied biology in the last year was 200
The number of students studying subjects A, B and C in a school is in the proportion of 12 : 15 : 16. There is a proposal to increase the number of students studying A, B and C, respectively by 50%, 20% and 50%. What will be the new proportion of the number of students studying A, B and C?
The data given in the table shows the number of students studying in 4 different disciplines in 5 institutes. Study the table and answer the question: Institutes Arts Science Commerce Computer Science A 36 48 59 57 B 45 54 55 48 C 55 36 56 51 D 45 48 55 53 E 48 44 52 55 What is the ratio of number of students studying Science in institutes C and D taken together to the number of students studying Computer Science in institutes A and E taken together?
The data given in the table shows the number of students studying in four different disciplines in 5 institutes. Study the table and answer the question. Institutes Arts Science Commerce Computer Science A 36 48 59 57 B 45 54 55 48 C 55 36 56 51 D 45 48 55 53 E 48 44 52 55 Number of students studying Computer Science in the institutes A and C taken together is what percent of the number of students studying Arts in the institutes B and D taken together?
The data given in the table shows the number of students studying in four different disciplines in 5 institutes. Study the table and answer the question: Institutes Arts Science Commerce Computer science A 36 48 59 57 B 45 54 55 48 C 55 36 56 51 D 45 48 55 53 E 48 44 52 55 By what percent is the number of students studying Computer Science in institutes A and B more than the number of students studying Arts in institutes B and C? 
The table represents the total number of students studying courses P, Q, R, S and T across eight institutes, i.e. A, B, C, D, E, F, G and H. Courses Institutes    A B C D E F G H P 520 410 550 450 570 210 750 450 Q 410 540 610 580 380 550 570 310 R 430 210 390 530 730 510 530 480 S 350 280 570 320 410 480 610 460 T 370 480 380 250 180 370 590 660 What is the ratio of the total number of students studying in Institute A to the total number of students studying in Institute H?