Business Statistics And Research Methods - Study Mode
[#61] If the coefficient of determination is a positive value, then the regression equation:
Correct Answer
(C) could have either a positive or a negative slope
[#62] Calculate the mean of marks of 46 students from the following table. Marks (X) Frequency 9 1 10 2 11 3 12 4 13 5 14 6 15 7 16 8 17 9 18 10 Total 55
Correct Answer
(B) 15
[#63] Concurrent deviation correlation coefficient is obtained by the following formula.
Correct Answer
(A) $$ pm sqrt { pm left( {frac{{2c - n}}{n}}
ight)} $$
[#64] Arithmetic mean of 98 items is 50. Two items 60 and 70 were left out at the time of calculation. What will be the correct mean of all the items?
Correct Answer
(B) AM = 50.3
[#65] Consider the following statements: 1. Median is not useful while dealing with skewed distribution such as income distribution or price distribution 2. Median can be determined graphically by drawing only one ogive 3. Mode can be used to describe qualitative phenomenon Which of the above statements are correct?
Correct Answer
(B) 1 and 3