Flashcards on Statistics

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What is the definition of statistics?

Statistics is the study of collection, analysis, interpretation, presentation, and organization of data.

What are the two main branches of statistics?

The two main branches of statistics are descriptive statistics and inferential statistics.

What is the purpose of descriptive statistics?

Descriptive statistics is used to summarize and describe the main features of data in a visual or numerical form.

What is the purpose of inferential statistics?

Inferential statistics is used to make inferences or predictions about a population based on sample data.

What is a variable in statistics?

In statistics, a variable is a characteristic or attribute that can be measured or observed.

What is the difference between categorical and numerical variables?

Categorical variables represent qualitative data, while numerical variables represent quantitative data.

What is the mean in statistics?

The mean is the average of a set of numbers. It is calculated by summing all the values and dividing by the total count.

What is the median in statistics?

The median is the middle value in a sorted list of numbers. If there is an even number of values, it is the average of the two middle values.

What is the mode in statistics?

The mode is the value that appears most frequently in a set of data.

What is the range in statistics?

The range is the difference between the maximum and minimum values in a set of data.

What is standard deviation in statistics?

Standard deviation measures the amount of variation or dispersion in a set of values.

What is correlation in statistics?

Correlation measures the relationship between two or more variables. It can be positive, negative, or zero.

What is hypothesis testing in statistics?

Hypothesis testing is a statistical method used to make decisions or draw conclusions about a population based on sample data.

What is probability in statistics?

Probability is the measure of the likelihood of an event occurring. It is expressed as a number between 0 and 1.

What is sampling in statistics?

Sampling is the process of selecting a subset of individuals or items from a larger population.

What is the definition of statistics?

Statistics is the study of collection, analysis, interpretation, presentation, and organization of data.

What are the two main branches of statistics?

The two main branches of statistics are descriptive statistics and inferential statistics.

What is the purpose of descriptive statistics?

Descriptive statistics is used to summarize and describe the main features of data in a visual or numerical form.

What is the purpose of inferential statistics?

Inferential statistics is used to make inferences or predictions about a population based on sample data.

What is a variable in statistics?

In statistics, a variable is a characteristic or attribute that can be measured or observed.

What is the difference between categorical and numerical variables?

Categorical variables represent qualitative data, while numerical variables represent quantitative data.

What is the mean in statistics?

The mean is the average of a set of numbers. It is calculated by summing all the values and dividing by the total count.

What is the median in statistics?

The median is the middle value in a sorted list of numbers. If there is an even number of values, it is the average of the two middle values.

What is the mode in statistics?

The mode is the value that appears most frequently in a set of data.

What is the range in statistics?

The range is the difference between the maximum and minimum values in a set of data.

What is standard deviation in statistics?

Standard deviation measures the amount of variation or dispersion in a set of values.

What is correlation in statistics?

Correlation measures the relationship between two or more variables. It can be positive, negative, or zero.

What is hypothesis testing in statistics?

Hypothesis testing is a statistical method used to make decisions or draw conclusions about a population based on sample data.

What is probability in statistics?

Probability is the measure of the likelihood of an event occurring. It is expressed as a number between 0 and 1.

What is sampling in statistics?

Sampling is the process of selecting a subset of individuals or items from a larger population.

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