What is the primary challenge in using the free-hand curve method for trend estimation?
It is subjective and may lead to inconsistent results.
The primary challenge in using the free-hand curve method is that it is subjective and may lead to inconsistent results. This is because different analysts may draw different curves based on their interpretation of the data, making the method less reliable.
The ______ is an unbiased estimator of the population mean.
If xi = i / 5 + 2, where i = 1, 2,..., 5, then the mean of x1, x2, ..., x5 is:
Let X and Y be two independent Poisson variates with rate 5 and 10, respectively, then the E(XY = 2) is equal to:
On fitting of a trend line Y = a + bt on a time series (with year as a unit of time), the monthly increment/decrement is given by:
If M: Mean, Md: Median, Mo: Mode, Q1: First Quartile and Q3: Third Quartile, then which of the following is an absolute measure of skewness?
For a two-way classification with p treatments, q blocks and r observations per cell, the degrees of freedom for error and total, respectively, are:
Let X and Y be two independent Poisson variates with rate 5 and 10, respectively, then the distribution of Z = X + Y is:
Which of the following is NOT true about ungrouped frequency distribution?
The relative frequency of a class is:
Let \( X \) follow Poisson distribution with mean \( \lambda \). If \[P(X = 2) = \frac{1}{2} P(X = 3),\] then the value of \( \lambda \) is:
The ______ is an unbiased estimator of the population mean.
If xi = i / 5 + 2, where i = 1, 2,..., 5, then the mean of x1, x2, ..., x5 is:
Let X and Y be two independent Poisson variates with rate 5 and 10, respectively, then the E(XY = 2) is equal to:
On fitting of a trend line Y = a + bt on a time series (with year as a unit of time), the monthly increment/decrement is given by:
If M: Mean, Md: Median, Mo: Mode, Q1: First Quartile and Q3: Third Quartile, then which of the following is an absolute measure of skewness?