Bilingual Measures of Variation

Measures of Variation

By Grace Fanshaw

The DIFFERENCE (subtraction) between the highest and lowest data point.

​La DIFERENCIA (resta) entre el punto de datos más alto y el más bajo.

Range

Key Vocab

1st & 3rd Quartiles

The distance (difference) between the 1st and 3rd quartile.

La distancia (diferencia) entre el primer y tercer cuartil.

Quartiles

The medians of the data less than (1st Q) and greater than (3rd Q) the dataset's median.


Las medianas de los datos menores que (1st Q) y mayores que (3.er Q) la mediana del conjunto de datos.

Interquartile Range

The data that splits the data SET into 4 equal parts

Los datos que dividen el CONJUNTO de datos en 4 partes iguales

1. -Put your data in numerical order

2. Find your ​highest and lowest number

3. SUBTRACT your lowest from your highest

4. The answer is your range
   

Range-
the difference between highest and lowest data point

1. ​Ordena tus datos numéricamente

2. Encuentra tu número más alto y más bajo

3. Resta el más bajo del más alto

4. La respuesta es tu rango

For the next slide- Open in a new page and follow along on a seperate sheet of paper

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Reorder

What are the steps to find the RANGE?

• Put your data in numerical order

• Find your highest and lowest data points

• Subtract the lowest from the highest

• The answer is your range

1

2

3

4

• 1
• 2
• 3
• 4

Fill in the Blanks

What would be the RANGE for this data? (the SCORE, not hours)

Fill in the Blanks

What would be the RANGE for this data set?

1. Ordena numéricamente tus datos

2. Encuentra la mediana

3. Encuentra las medianas de los datos mayores y menores que la mediana

   ​

​

Quartiles-the data that splits the data SET into 4 equal parts

Los datos que dividen el CONJUNTO de datos en 4 partes iguales

1. Put your data in numerical order

2. Find the median

3. Find the medians for the data greater than and less than the median

​

Reorder

How do you find the QUARTILES?

• Put your data in numerical order

• Find the median

• Find the medians for the data greater than and less than your median

1

2

3

• 1
• 2
• 3

Hotspot

Which of these numbers is the FIRST QUARTILE?

Hotspot

Which of these numbers is the MEDIAN (2nd quartile)?

Hotspot

Which of these numbers is the 3RD QUARTILE?

1. Find your quartiles

2. Take your 3rd Quartile and subtract your 1st from it​

Interquartile Range- The difference between the 1st Quartile and the 3rd

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Fill in the Blanks

What would be the interquartile range on this data?

Fill in the Blanks

What would be the interquartile range (IQR) for this data set?

Fill in the Blanks

What would the IQR be for this dataset?

Match

Match the math terms with their definitions

• Range

• Quartiles

• 1st Quartile

• 3rd Quartile

• Interquartile Range (IQR)

The difference between the highest and lowest values in a set

Values that divide a data set into four equal parts

Median of the data LESS THAN the median

Median of the data GREATER THAN the medi

The difference between the 1st and 3rd Q

• The difference between the highest and lowest values in a set

• Values that divide a data set into four equal parts

• Median of the data LESS THAN the median

• Median of the data GREATER THAN the medi

• The difference between the 1st and 3rd Q