Use of Statistical Tools

Which statement best describes the importance of statistical tools in economics?

1. They make economic analysis impossible.
2. They help organize, analyze, interpret, and present economic data for better decision-making.
3. They replace economic theories completely.
4. They eliminate the need for collecting data.

Which statistical tool is most appropriate for studying the association between rainfall and crop production?

1. Correlation
2. Mode
3. Median
4. Pie chart

Statistics is most useful for:

1. Making decisions based on data
2. Ignoring numerical information
3. Eliminating uncertainty completely
4. Replacing practical experience

Why are graphs and diagrams widely used in statistics?

1. They replace numerical data completely.
2. They simplify data and improve understanding.
3. They eliminate statistical calculations.
4. They increase the amount of information collected.

Which statistical tool helps summarize a large amount of data into a single representative value?

1. Arithmetic mean
2. Scatter diagram
3. Histogram
4. Pie chart

Index numbers are mainly used to measure:

1. Changes over time in economic variables
2. Population size only
3. Number of schools
4. Rainfall only

Which graph is commonly used to display continuous frequency distributions?

1. Pie chart
2. Bar diagram
3. Histogram
4. Pictograph

Which statistical tool measures the relationship between two variables?

1. Median
2. Correlation
3. Mode
4. Range

Which measure of dispersion is calculated as the difference between the largest and smallest values?

1. Mean deviation
2. Standard deviation
3. Range
4. Median

Measures of dispersion are used to study:

1. The average value only
2. The spread or variability of data
3. Population growth only
4. Economic planning only

The statistical measure that identifies the most frequently occurring value is called:

1. Mean
2. Median
3. Mode
4. Standard deviation

Which measure of central tendency is the middle value of an ordered dataset?

1. Mean
2. Median
3. Mode
4. Range

Which statistical tool is mainly used to find the average value of a dataset?

1. Correlation
2. Mean
3. Histogram
4. Index number

What is the primary purpose of using statistical tools?

1. To make data more complicated
2. To collect only primary data
3. To analyze, interpret, and present data effectively
4. To eliminate the need for research