A sample from the population does not have to share the same characteristics as the population
a) True
b) False
Question 2
Probability sampling is based on various random selection principles
a) True
b) False
Question 3
With the non-probability sampling m
An alternative expression for qualitative variables is "categorical variables"
a) True
b) False
Question 2
Frequency distribution is another expression for a bar chart
a) True
b) False
Question 3
Ratio scales are like
a) Nominal scales with the brackets
b
In case there are too many outliers in the data set, the most representative average value is
a) Mean
b) Mode
c) Median
Since mode is the most frequently occurring score, it can be determined directly from a
frequency distribution or a histogram
a) True
b
It is essential for the time series to be measured in equidistant units of time
a) True
b) False
Question 2
If a value is missing in a time series we can do one of the following
a) Just copy the previous value
b) Estimate it as an average between two neig
The most commonly used formula to describe linear relationship is
a) = b0 + b1x + b2x2
b) = b0 + b1x2
c) = b0 + b1x
Question 4
Another expression for constant variance is
a) Leptokracy
b) Homoscedacity
c) Heteroscedacity
d) Covariance
Question 5
Residual
The null hypothesis of the sign test is that
a) Half the ranks to be less than the median and half greater than the median
b) Half the ranks to be less than the mean and half greater than the mean
c) The lower half the ranks to have the same mean as the u
Probability is usually measured on the scale between zero and 1
a) True
b) False
Question 2
The set of all possible outcomes in an experiment is defined as the total population
a) True
b) False
Question 3
Two events are mutually exclusive if
a) They are e
In this diverse world of ours, no two things are exactly the same. A statistician is interested in
both the differences and the similarities; i.e., both departures and patterns.
The actuarial tables published by insurance companies reflect their statistic
One or two tail test will determine
a) If the two extreme values (min or max) of the sample need to be rejected
b) If the hypothesis has one or possible two conclusions
c) If the region of rejection is located in one or two tails of the distribution
Quest
Rejection of the null hypothesis is a conclusive proof that the alternative hypothesis is
a) True
b) False
c) Neither
Question 2
Parametric test, unlike the non-parametric tests, make certain assumptions about
a) The population size
b) The underlying dist
Online HRISs are beginning to very popular and viable for any company no matter the size. If
your company needs a better and more efficient way to organize and manage its human resources
information there are tons of systems out there, you just need to fi