These results are measurable. The hair colors of players on a football team, the color of cars in a parking lot, the letter grades of students in a classroom, the types of coins in a jar, and the shape of candies in a variety pack are all examples of qualitative data so long as a particular number is not assigned to any of these descriptions.
Qualitative data describes qualities or characteristics. It is collected using questionnaires, interviews, or observation, and frequently appears in narrative form. For example, it could be notes taken during a focus group on the quality of the food at Cafe Mac, or responses from an open-ended questionnaire. Qualitative research involves collecting and analyzing non-numerical data e.
Qualitative research is the opposite of quantitative research, which involves collecting and analyzing numerical data for statistical analysis. Begin typing your search term above and press enter to search. Press ESC to cancel. Skip to content Home What is an n value in statistics? Ben Davis June 1, What is an n value in statistics? What is sample size n? What does N and N mean in statistics? See mean. For a sample of numbers, add the numbers, divide by the number of numbers, n. For the entire set a population of numbers, add the numbers, divide by the number of numbers, n.
The Statistics Measuring Spread Range and standard deviation are statistics which measure spread - how the data is distributed. To compute the range, subtract the smallest number from the largest number to find the difference between the largest and smallest numbers.
To compute the standard deviation, average the difference between each piece of data and the mean and do it in the standard way. Replace the bracketed bit with 3. Finally, do the subtraction that remains. The answer is Negative and positive numbers:.
A positive number multiplied by a positive number is always positive. A negative number multiplied by a negative number is always positive. A negative number multiplied by a positive number is always negative.
Decimal places:. Normally with statistics in psychology, 2 decimal places is sufficient for the answer to a calculation: e. However, to avoid rounding errors having a cumulative effect during the process of performing calculations, while you are carrying them out it's best not to round up or down too much: either leave the numbers as accurate as the calculator displays them, or round them to three or four significant digits e. Multiplication symbols:. A brief guide to some commonly used statistical symbols: Symbols for the mean: an upper case X with a line above it or lower case x with a line above it denote "the mean of the X scores".
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