What are the two types of data based on their sources?

Two types of data sources exist.

• Primary data is firsthand information.

• Secondary data is collected indirectly.

• Sources can be published or unpublished.

Fill in the blank: The difference between the highest and lowest values in a dataset is known as the ___.

Range

True or False: A histogram has gaps between consecutive rectangles.

False. A histogram consists of rectangles with continuous class intervals and has no gaps between them.

What is the arithmetic mean and how is it calculated?

The arithmetic mean is the average of a given set of numbers, calculated by dividing the sum of all observations by the total number of observations.

Riddle: I represent parts of a whole in a circular format. What am I?

A pie chart

In the context of frequency distribution, what is the significance of the median class?

The median class indicates data center.

• Defines median's position in data.

• Crucial for statistical analysis.

• Aids in summarizing data distribution.

Fill in the blank: The mode of a dataset is the value that occurs most ___.

Frequently

What is the relationship between mean, median, and mode in a dataset?

The relationship is given by the formula: 
Mode = 3 Median - 2 Mean.

The range of a dataset is determined by ___ and ___.

The range of a dataset is determined by the maximum observation and the minimum observation.

True or False: A histogram can have gaps between its rectangles.

False. A histogram consists of rectangles with continuous class intervals as bases, meaning there are no gaps between consecutive rectangles.

Riddle: I am a type of graph with bars of uniform width, representing categories or variables. What am I?

A bar graph.