Statistics and Probability — Flashcards

Answer

Statistics refers to techniques or methods relating to collection, classification, presentation, analysis and interpretation of quantitative data. It is the science of data and helps extract informati…

Answer

Central tendency is a way of describing a dataset with one typical value that represents the center of the data. The three primary measures are mean, median, and mode.

Answer

The Mean is the arithmetic average of a dataset. It is found by adding all values and dividing by the number of values. Formula: Mean = Sum of all values / Number of values. Example: for 9, 3, 1, 8, 3…

Answer

Add the values: 9 + 3 + 1 + 8 + 3 + 6 = 30. Then divide by the number of values: 30 / 6 = 5. So, the mean is 5.

Answer

The Median is the middle value in a dataset arranged in order. It divides the data into two halves, so 50% of the values are below it and 50% are above it. If the dataset has an even number of values,…

Answer

Arrange the numbers in order: 1, 3, 3, 6, 8, 9. The two middle numbers are 3 and 6, so the median is (3 + 6) / 2 = 4.5.

Answer

The Mode is the value that appears most frequently in a dataset. In 9, 3, 1, 8, 3, 6, the value 3 appears twice, so the mode is 3. A dataset can be unimodal, bimodal, multimodal, or may have no mode.

Answer

Mean is the arithmetic average, median is the middle value after ordering the data, and mode is the most frequent value. All three are measures of central tendency, but each describes the center of da…