How do you find the mean, median, mode and range?
Kurze Antwort
The mean is the total divided by how many values there are. The median is the middle value when the data is in order. The mode is the most common value. The range is the largest value minus the smallest, and measures how spread out the data is.
Schritt für Schritt
- Put the data in order from smallest to largest.
- Mean: add all the values and divide by the number of values.
- Median: find the middle value. With an even number of values, take the mean of the middle two.
- Mode: find the value that appears most often. There can be more than one, or none.
- Range: largest value minus smallest value.
Beispiel
Data: 4, 7, 2, 7, 10, 6
- In order: 2, 4, 6, 7, 7, 10
- Mean = 36 ÷ 6 = 6
- Median = (6 + 7) ÷ 2 = 6.5
- Mode = 7, range = 10 − 2 = 8
Typische Fehler
- Finding the median without ordering the data first.
- Giving the frequency instead of the value as the mode.
- Giving the range as two numbers, such as 2 to 10, instead of 8.
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