The trend line Y=a+bX obtained by the least Squares method is known as the line of

Related MCQs

• Which of the following is a method of measuring trend:
• Value of b in the trend line Y = a + bX is:
• If the sum of squares of the rank differences of 10 pairs of values is 30, find the correlation coefficient between them.
• In a bivariate sample, the sum of squares of differences between marks of observed values of two variables is 33 and the rank correlation between them is 0.8. Find the number of pairs of observations:
• In a bivariate distribution, Spearman’s Coefficient of Correlation is -0.25. If the sum of the squares of various ranks is 150, find out the number of pairs of items:
• The sum of the squares of the deviations of the variable is when taken about arithmetic mean
• The arithmetic mean of the marks obtained by 50 students was calculated as 44. It was later discovered that a score of 36 was misread as 56. Find the correct value of arithmetic mean of the marks obtained by the students.
• If the growth rate is constant, the trend is –
• Secular trend can be measured by:
• The marks obtained by 9 students in a test are 25, 20, 15, 45, 18, 7, 10, 38 and 12. Find the median.