The distribution of heights (in inches) of students aged 18–20 has a mean of 54 and standard deviation of 2.5. What will be the z-score for a student who is 5 feet tall?
Explanation-
To calculate the z-score, we use the formula:
Where:
= the observed value (in this case, 5 feet = 60 inches)
= the mean (average) = 54 inches
= the standard deviation = 2.5 inches
by putting the values-
So, the correct answer is option A : 2.4
Find the linear regression equation for the following data pairs (x,y) given in the above table
Select the option that represents the correct combination of non-parametric tests and its equivalent parametric test respectively that can be used to compare two or more groups.
The following statements were made describing the properties of a UPGMA tree (Unweighted Pair Group Method with Arithmetic Mean):
A. It describes species relationships and is therefore the best method to describe a new species.
B. It is a method of hierarchical clustering.
C. The raw data is a similarity matrix and the initial tree is rooted.
D. It permits lineages with largely different branch lengths and corrections for multiple substitutions.
Which one of the following options represents the correct properties?
From the steps listed below, some are used to evaluate the goodness of fit using the chi-square test.
A. The mean, variance and standard deviation are calculated
B. Variance calculated using
D. The degree of freedom is calculated as n-1, where n is the number of ways in which the expected classes are free to vary
E. The probability value is obtained
Which one of the following options provides the correct sequence of steps in this statistical analysis?
C. Test statistic calculated using
The following represents an equation for Bayesian statistics:
Which one of the following options correctly represents A, B, C and D in the above equation?
Which one of the following statements is correct?
Given below are a list of statistical terms in Column A and associated properties/features/descriptors in Column B:
Which one of the options given below is the most appropriate match between entries of Column A with those of Column B?
The distribution of heights (in inches) of students aged 18–20 has a mean of 54 and standard deviation of 2.5. What will be the z-score for a student who is 5 feet tall?
What can you infer if the correlation coefficient (Pearson r) is close to -1 for two variables?
What is the 50th percentile of the numbers 9, 5, 11, 3 and 2?
