29 Questions
Which measure of central tendency is best suited for qualitative data?
Median
What is a demerit of calculating the median?
It cannot be determined for even number of observations
Which measure of central tendency can be calculated from a grouped frequency distribution?
Mode
Which measure of variability measures how dispersed the data is in relation to the mean?
Standard Deviation
What is another name for Quartile Deviation?
Interquartile Range
What does a low standard deviation indicate about the data?
Data are clustered tightly around the mean
What is another term for the statistical methods applied to biological problems?
Biostatistics
Which term means 'Biological Measurement or Measurement of Life'?
Biometry
What is the main purpose of using statistical tools in the field of Biostatistics?
To express facts, observations, or measurements in figures
Which area is NOT typically associated with the application of Biostatistics?
Mathematical Statistics
In what field is the application of statistics known as Medical Statistics?
Medicine
Which statistical method is used to determine the association between two variables in Biostatistics?
Finding correlation between variables
What is the final step in the Statistical Method according to Croxton and Gowden?
Interpretation of data
Which measure of central tendency is defined as the 'positional average'?
Median
What is a major merit of calculating the mean as a measure of central tendency?
It is least affected by sampling fluctuations
Which step in the Statistical Method focuses on determining measures like correlation and regression?
Analysis of data
What is a demerit associated with calculating the mean?
It is greatly affected by extreme fluctuations
According to Croxton and Gowden, which characteristic does not apply to the mean as a measure of central tendency?
Greatly affected by extreme fluctuations
In a Perfect Positive Correlation between two variables X and Y, what happens when there is a change in X?
Equal positive proportion of change in Y in the same direction
What type of correlation is concluded when the change in one variable has no effect on the other variable?
Zero Correlation
When the value of a variable increases and the value of the other variable decreases, what type of correlation is exhibited?
Perfectly Negative Correlation
What characterizes Linear correlation between two variables?
Ratio of change in one variable to linear quantum of change in the other variable
In a Zero Correlation between two variables X and Y, what happens when there is a change in X?
No effect on Y
What does the coefficient of variation measure?
Dispersion around the mean
How is correlation defined?
Average relationship between variables
Which type of correlation involves the variables moving in the same direction?
Positive Correlation
What is a characteristic of Positive Correlation?
Change in one variable causes change in another
When is there a correlation between two variables?
When their values increase at the same rate
What is Simple Correlation?
Correlation between two variables only
Learn about how to calculate and understand the median, its merits, and demerits. Discover why it cannot be used for qualitative characteristics such as color of flowers or sweetness of fruits.
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