List of top Statistical Science Questions

A variable that can assume any value between two given points is called :
Which of the following is the sequence alignment tool ?
In simple linear regression, the number of unknown constants are :
The method of least squares dictates that we choose a regression line where the sum of the square of deviations of the points from the line is :
Increasing the sample size has the following effect upon the sampling error :
Which of the following p-values will lead us to reject the null hypothesis if the significance level of the test is 5% ?
A multiple-choice test has 30 questions. There are 4 choices for each question. A student who has not studied for the test decides to answer all the questions randomly by guessing the answer to each question. Which of the following probability distributions can be used to calculate the student’s chance of getting at least 20 questions right ?
The probability of selecting an item in probability sampling, from the population is :
In Simple Random Sampling with replacement (SRSWR), the variance of \(\bar{y}_n\) (with standard notation) is given by:
In the straight line graph of the linear equation Y = a + bX, slope is horizontal if :
In a normal curve, 99% of the observations are included in the range
In a Poisson Distribution, if mean = e, then P(x) is given by ____________.
When Viswanath plays chess, he wins with probability 0.80, loses with probability 0.20. Assume independence, find the probability that Viswanath's first win happens when he plays his third game.
Which of the following is not a characteristic of the normal distribution ?
In a layout of a randomized block design with 7 treatments, each replicated 5 times, the needed 35 experimental units will be grouped into :
If a constant 35 is added to each of the value of X and Y, the regression coefficient is :
An experiment is conducted in a Randomized block design with five treatments in four replications, the standard error of the difference between two treatments means are (MSE is the error mean square)
In case of a randomized block design with 5 treatments, the mean sum of squares due to error is 2 and the F-value for testing significance of treatment differences is 12.5, then the treatment sum of squares will be :
The point of inflexion of Normal ($\mu,\sigma^2$) curve are :
In a normal distribution 10.03% of the items are under 35kg weight and 89.97% of the items are under 80kg weight. What are the mean and standard deviation of the distribution ?
The list of all sampling units in the population is known as :
Completely randomized designs are suitable in the situation(s) when :
In a completely randomized design, there are five treatments T\(_1\), T\(_2\), T\(_3\), T\(_4\) and T\(_5\). T\(_1\), T\(_2\), T\(_3\) and T\(_4\) are replicated 3, 4, 5 and 6 times respectively. If the error degrees of freedom is 19, then T\(_5\) is replicated :
Uniformity trials are conducted to :
In the field layout of a randomized block design, the blocks are formed in the direction :