Statistics and Probability
ICSE · Class 12 · Artificial Intelligence
Flashcards for Statistics and Probability — ICSE Class 12 Artificial Intelligence. Quick Q&A cards covering key concepts, definitions, and formulas.
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What is statistics?
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…
What is central tendency?
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.
Define mean and give its formula.
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…
How is the mean of 9, 3, 1, 8, 3, 6 calculated?
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.
Define median and explain how it is found.
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,…
What is the median of 9, 3, 1, 8, 3, 6?
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.
Define mode and state the mode of 9, 3, 1, 8, 3, 6.
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.
Compare mean, median, and 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…
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