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Relative Frequency. How to calculate relative frequency. Noemi Navas Arranz. 1. First of all, count the number of times that each piece of data is repeated. IIII. IIII. IIII. IIII. This is the absolute frequency. IIII. IIII. IIII. IIII. 2. Next, count the total number of events.

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## Relative Frequency

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**Relative Frequency**How to calculate relative frequency Noemi Navas Arranz**1. First of all, count the number of times that each piece**of data is repeated.**IIII**IIII IIII IIII**This is the absolute frequency.**IIII IIII IIII IIII**2. Next, count the total number of events.**II IIII IIII IIII IIII**II**IIII IIII IIII IIII**3. Now, write a fraction for each piece of data. Write the**absolute frequency as the numerator and the total number of events as the denominator. II 15 25 Numerator IIII IIII IIII IIII Denominator**The fraction is the relative frequency.**II IIII IIII IIII IIII**4. Then, divide the numerator by the denominator. Use a**calculator. II 15:25= IIII IIII IIII IIII**Round the result up or down to the nearest hundredth.**II 15:25=0,60 IIII IIII IIII IIII**The result of the fraction is also the relative frequency.**II IIII IIII IIII IIII**5. What happens if you add up all the relative frequencies?**0,60 + 0,28 + 0,12 = 1 Why is it 1? Because the sum of all the relative frequencies is the unit.**6. Look at these additions. Can you see any differences?**0,60 0,28 + 0,12 1,00 0.60 0.28 + 0.12 1.00 The only difference is the use of different symbols for the decimals: the comma and the point.**Catalan and Spanish speaking countries use the comma for**decimals.English speaking countries use the point. 0,60 0,28 + 0,12 1,00 0.60 0.28 + 0.12 1.00**1. First of all...**II IIII IIII IIII IIII IIII IIII II III**Count the number of times that each piece of data is**repeated. This is the... II IIII IIII IIII IIII IIII IIII II III**Absolute frequency**II IIII IIII IIII IIII IIII IIII II III**This is the absolute frequency**II IIII IIII IIII IIII IIII IIII II III**2. Next...**II IIII IIII IIII IIII IIII IIII II III**Count the total number of events.**II IIII IIII IIII IIII IIII IIII II III**So, how many people answered the question?**II IIII IIII IIII IIII IIII IIII II III 40**3. Now...**II IIII IIII IIII IIII IIII IIII II III**Write a fraction for each piece of data. How?**II IIII IIII IIII IIII IIII IIII II III**Write the absolute frequency as the numerator and the total**number of events as the denominator. II 12 40 Numerator IIII IIII IIII IIII IIII IIII II Denominator III**The fraction is ...**II IIII IIII IIII IIII IIII IIII II III**The fraction is the relative frequency.**II IIII IIII IIII IIII IIII IIII II III**4. Then...**II IIII IIII IIII IIII IIII IIII II III**Divide the numerator by the denominator. Use ...**a calculator. 12:40= II IIII IIII IIII IIII IIII IIII II III**Round the result up or down to ...**12:40= II IIII IIII IIII IIII IIII IIII II III**Round the result up or down to the nearest hundredth.**12:40=0,30 II IIII IIII IIII IIII IIII IIII II III**The result of the fraction is ...**II IIII IIII IIII IIII IIII IIII II III**The result of the fraction is also the relative frequency.**II IIII IIII IIII IIII IIII IIII II III**5. What happens if you add up all the relative frequencies?**0,30 + 0,18 + 0,20 + 0,08 + 0,25 = 1 Why is it 1? Because the sum of all the relative frequencies is the unit.**6. Work in groups.Order the steps of the process to**calculate the relative frequency.When you finish write the numbers in your worksheet individually.**7. In groups, calculate the relative frequency for your own**data.

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