Question 1

For a distribution of data, if the arithmetic mean> median>mode, then which of the following is true?

Accepted Answer

A) The distribution is symmetrical 
B) The distribution is positively skewed 
C) The distribution is negatively skewed 
D) None of these 
A) The distribution is symmetrical 
B) The distribution is positively skewed 
C) The distribution is negatively skewed 
D) None of these

Question 2

The measures of dispersion can never be:

Accepted Answer

A) Positive 
B) Negative 
C) Zero 
D) equal to 2 
A) Positive 
B) Negative 
C) Zero 
D) equal to 2

Question 3

If all the points of a scatter diagram lie on a straight line falling from left upper corner to the right bottom corner, the correlation is called...................

Accepted Answer

A) Zero correlation 
B) High degree of positive correlation 
C) Perfect negative correlation 
D) Perfect positive correlation 
A) Zero correlation 
B) High degree of positive correlation 
C) Perfect negative correlation 
D) Perfect positive correlation

Question 4

If the regression line is Y on X, then the variable X is known as..........................

Accepted Answer

A) Independent variable 
B) Explanatory variable 
C) Regressor 
D) All the above 
A) Independent variable 
B) Explanatory variable 
C) Regressor 
D) All the above

Question 5

What is the value of the first quartile for observations 15, 18, 10, 20, 23, 28, 12, 16?

Accepted Answer

A) 17 
B) 16 
C) 12.75 
D) 12 
A) 17 
B) 16 
C) 12.75 
D) 12

For a distribution of data, if the arithmetic mean> median>mode, then which of the following is true?

The measures of dispersion can never be:

If all the points of a scatter diagram lie on a straight line falling from left upper corner to the right bottom corner, the correlation is called...................

If the regression line is Y on X, then the variable X is known as..........................

What is the value of the first quartile for observations 15, 18, 10, 20, 23, 28, 12, 16?

Statistical Measures of Central Tendency and Dispersion

Basic Concepts and Measures of Statistical Dispersion

Statistical Measures and Correlation Coefficients

Regression and Correlation Analysis

Index Numbers and Statistical Analysis

Index Numbers, Time Series and Data Collection Methods

Average and Range Calculations

Correlation Coefficient, Index Numbers, and Time Series

Filters

Exam 8: Statistics and Data Analysis

For a distribution of data, if the arithmetic mean> median>mode, then which of the following is true?

The measures of dispersion can never be:

If all the points of a scatter diagram lie on a straight line falling from left upper corner to the right bottom corner, the correlation is called...................

If the regression line is Y on X, then the variable X is known as..........................

What is the value of the first quartile for observations 15, 18, 10, 20, 23, 28, 12, 16?

Statistical Measures of Central Tendency and Dispersion

Basic Concepts and Measures of Statistical Dispersion

Statistical Measures and Correlation Coefficients

Regression and Correlation Analysis

Index Numbers and Statistical Analysis

Index Numbers, Time Series and Data Collection Methods

Average and Range Calculations

Correlation Coefficient, Index Numbers, and Time Series

Filters