I can find the median of a data set and use it to describe what is typical.Puedo hallar la mediana de un conjunto de datos y usarla para describir lo que es típico.
MissionMisión · Case FilesExpedientes
Follow the numbers to the truth.Sigue los números hasta la verdad.
Agent, the Case Files desk is buried in witness numbers, and they are all out of order! Line them up, find the middle, and name the typical value to crack the case.
Agente, el escritorio de Expedientes está lleno de números de testigos, ¡y están todos desordenados! Aliníalos, halla el medio y nombra el valor típico para resolver el caso.
Word bankBanco de palabras 4 words4 palabrasmedian, outlier, typical value, …mediana, valor atípico, valor típico, …
- medianmediana
- The middle value when the data are in order. With two middle values, it is halfway between them.El valor del medio cuando los datos están en orden. Con dos valores del medio, está a mitad de camino entre ellos.
- outliervalor atípico
- A value that is much bigger or smaller than the rest of the data.Un valor mucho mayor o menor que el resto de los datos.
- typical valuevalor típico
- A number that stands for the whole set, such as the median.Un número que representa a todo el conjunto, como la mediana.
- measure of centermedida de tendencia central
- One number that describes a typical value in a data set.Un número que describe un valor típico de un conjunto de datos.
Stage 1 of 5Etapa 1 de 5
Get ReadyPrepárate
Wake up what you know, then explore today's model.
Activa lo que sabes y luego explora el modelo de hoy.
- Order these eight numbers from least to greatest: 17, 7, 5, 19, 13, 6, 4, 21. Predict the median. Then change only the greatest number in the model to a much bigger number. Explain what happens to the median and why.
- A histogram bar for the interval 10–19 has a height of 6. How many data values fall in that interval?
- 6
- 10
- 16
- 19
- A histogram uses the intervals 0–9, 10–19 and 20–29. What is the width of each interval?
- 3
- 9
- 10
- 29
- A histogram has bar heights 3, 7, 5 and 2. How many data values are in the whole set?
- 4
- 7
- 15
- 17
- 1 fresh problem with new numbers each time (interactive only).
Stage 2 of 5Etapa 2 de 5
Try ItInténtalo
Use the hints when you need them. Every wrong answer tells you why.
Usa las pistas cuando las necesites. Cada respuesta incorrecta te dice por qué.
- Find the mean of: 10, 14, 8, 12, 16
- 10
- 12
- 14
- 60
- Find the median of: 3, 7, 2, 9, 5
- 3
- 5
- 5.2
- 7
- Find the mode of: 4, 7, 4, 9, 2, 4, 8
- 2
- 4
- 7
- 9
Stage 3 of 5Etapa 3 de 5
On Your OwnPor tu cuenta
Tables, mistakes to find, and problems with a few steps.
Tablas, errores por encontrar y problemas de varios pasos.
- Find the mean, median, and mode of each data set. Round each mean to the nearest hundredth when needed.
- Match each measure to its definition.
- Data set: 4, 6, 6, 8, 10, 12. What is the median?
- 6
- 7
- 7.67
- 8
- What is the best next move?
- Add all seven times and divide by 7.
- Pick the number in the middle of the list as it is written.
- Write the times in order from least to greatest.
- Choose the longest time, 12, to show the biggest wait.
Stage 4 of 5Etapa 4 de 5 · OptionalOpcional
Practice MorePractica más
Optional extra practice. Press New numbers for another problem on the same skill.
Práctica extra opcional. Toca Números nuevos para otro problema de la misma habilidad.
- 5 fresh problems with new numbers each time (interactive only).
Stage 5 of 5Etapa 5 de 5
Show What You KnowDemuestra lo que sabes
Show what you learned today. Take your time; you can try again.
Muestra lo que aprendiste hoy. Tómate tu tiempo; puedes intentarlo otra vez.
- The teacher said 'most students scored around 87.' Which measure is that?
- The mode
- The mean (average)
- The median
- The range
- The student said 'the most common score was 92.' Which measure is that?
- The mean
- The median
- The mode
- The range
- Data set: 4, 7, 10, 7, 12. What is the median, and what does it tell you?
- 7 — a typical value in this set is about 7
- 8 — it is the average of all five values
- 10 — it is the middle number as the list is written
- 12 — it is the largest value