Mean, Median, and Mode Flashcards

Grade 6 · Math · Flashcards

Vocabulary and practice problems for measures of center and data analysis.

Flashcards

Mean: Sum of all data values divided by the number of values; the average
Median: The middle value of an ordered data set; if even number of values, average the two middle ones
Mode: The most frequently occurring value; a set can have zero, one, or multiple modes
Range: Greatest value minus least value; measures the spread of the data
Outlier: An extreme value much higher or lower than the rest; most affects the mean
Find mean of 2, 4, 6, 8, 10: (2+4+6+8+10) ÷ 5 = 30 ÷ 5 = 6
Find median of 3, 7, 9, 13, 15: Middle value = 9
Find median of 2, 6, 10, 14: (6 + 10) ÷ 2 = 8
Find mode of 1, 2, 2, 3, 4, 4, 4: Mode = 4 (appears 3 times)
Bimodal data set example: 2, 3, 3, 5, 5, 7 — modes are 3 and 5
When is median better than mean?: When there are outliers — the median is not affected by extreme values
When is mode most useful?: When you want to know the most common value, especially in non-numerical data