I can tell the difference between a statistical question and a non-statistical question.Puedo distinguir entre una pregunta estadística y una pregunta no estadística.
MissionMisión · Reef RescueRescate del arrecife · night shiftturno de noche
Protect the coral, one calculation at a time.Protege el coral, un cálculo a la vez.
Night falls over the reef and the lights glow. A storm mixed up the survey sheets. Only a sharp data detective can tell which questions still need data and which never did.
Cae la noche sobre el arrecife y las luces brillan. Una tormenta mezcló las hojas de la encuesta. Solo un detective de datos atento puede decir qué preguntas aún necesitan datos y cuáles nunca los necesitaron.
Word bankBanco de palabras 5 words5 palabrasstatistical question, non-statistical question, data, …pregunta estadística, pregunta no estadística, datos, …
- statistical questionpregunta estadística
- A question that expects different answers, so you collect data to answer it.Una pregunta que espera respuestas diferentes, por lo que se reúnen datos para responderla.
- non-statistical questionpregunta no estadística
- A question with one fixed answer. Nothing varies, so there is nothing to collect.Una pregunta con una sola respuesta fija. Nada varía, así que no hay nada que reunir.
- datadatos
- Facts or numbers you collect, such as the answers to a survey.Hechos o números que reúnes, como las respuestas de una encuesta.
- variabilityvariabilidad
- How much the values in a set of data differ from one another.Cuánto difieren entre sí los valores de un conjunto de datos.
- surveyencuesta
- A way to collect data by asking people the same question.Una manera de reunir datos preguntándoles a las personas la misma pregunta.
Stage 1 of 5Etapa 1 de 5
Start StrongEmpieza fuerte
Each rung is harder than the last, and the numbers change every time.
Cada peldaño es más difícil que el anterior y los números cambian cada vez.
- 6 fresh problems with new numbers each time (interactive only).
Stage 2 of 5Etapa 2 de 5
Stretch Your ThinkingAmplía tu pensamiento
Plan, solve, then check that your answer makes sense.
Planea, resuelve y revisa que tu respuesta tenga sentido.
- Find the Reasoning Error
- Write one statistical question and one non-statistical question about your school's cafeteria. Explain why each question is or is not statistical, and describe what the data would look like for the statistical question.
- A survey asks 30 students how many books they read last month, collecting 30 answers. What makes this a statistical question?
- It is about books
- Everyone reads the same number
- The answers vary from student to student
- It has exactly one correct answer
- The Reef Rescue crew has 6 dive teams. For each question, type Yes if it is statistical, then type how many data values the crew would collect.
- Dana asks, “How many pieces of plastic were collected on the beach last year in total?” Kofi asks, “How many pieces were collected in each of the 52 weeks last year?” Which statement is correct?
- Only Dana’s question is statistical, and it collects 1 data value.
- Only Kofi’s question is statistical, and it collects 52 data values.
- Both questions are statistical, and each collects 52 data values.
- Neither question is statistical, because both are about one beach.
- The table shows the divers at four reefs. Each diver reports on 3 dives. The question is “How many fish did each diver see on each dive?” How many data values will the team collect?
- Mateo says every anemone has the same number of clownfish, so “How many clownfish live in each anemone?” has one fixed answer. The dot plot shows counts for 10 anemones. What should the team conclude?
- Mateo is wrong: the counts differ from anemone to anemone, so the question is statistical.
- Mateo is right: all the anemones have the same count.
- Mateo is right: a plot with dots means the question has one answer.
- Mateo is wrong, because 10 anemones are too few to make a question statistical.
Stage 3 of 5Etapa 3 de 5
InvestigateInvestiga
Use the model to test an idea. Then check it.
Usa el modelo para probar una idea. Luego compruébala.
- Sort each set of data by how much variability it shows. Numbers that are all the same have none. Numbers close together have low variability. Numbers far apart have high variability.
- Sort each question: could it produce data that vary, or does it have one fixed answer?
- Match each question that has one fixed answer with a statistical question about the same topic.
- Write two questions about the same topic, such as school lunch. Make one a statistical question and one a non-statistical question. Say which is which and explain how you know. Then tell what data you would collect with a survey.
- 2 fresh problems with new numbers each time (interactive only).
Stage 4 of 5Etapa 4 de 5
Find and FixEncuentra y corrige
Somebody made a mistake. Find the step and fix it.
Alguien cometió un error. Encuentra el paso y corrígelo.
- Kenji decides whether “How many dives did Reef Rescue make last year in total?” is a statistical question.
- Sana reviews “How many tons of fish did one boat catch in each month of 2025?”
- Tariq decides whether “How many days are in each week of April?” is a statistical question.
- First set: 120, 121, 120, 122. Second set: 3, 40, 11, 27. Mei says the first set has more variability because its numbers are bigger. Jamal says the second has more because its numbers are farther apart. Who is right?
- Mei, because bigger numbers mean more variability
- Both sets have the same variability
- Jamal, because the second set has the smaller numbers
- Jamal: the second set is more spread out
- What is the best next move?
- Keep the question, because hours is a number answer.
- Rewrite it to ask about one other student's night.
- Rewrite it to ask about every student in the grade.
- Rewrite it to ask how many students are in the grade.
Stage 5 of 5Etapa 5 de 5
Prove Your UnderstandingDemuestra tu comprensión
Say how sure you are, solve, then create a problem of your own.
Di qué tan seguro estás, resuelve y luego crea un problema tuyo.
- Which statement about statistical questions is true?
- It must always ask about many different people.
- It expects answers that can differ from case to case.
- It is any question whose answer is a number.
- It is any question about science or sports.
- A team records 14, 9, 17, 11, 12 minutes to answer a statistical question about dives. Which of these is the data?
- The question “How long does each dive last?”
- The dive team’s clipboard
- The word “minutes”
- The list 14, 9, 17, 11, 12 minutes
- Dana asks each of the 12 divers on the boat, “How many fish did you see on today’s dive?” Is this a statistical question?
- Yes, because the answers can differ
- No, because it is about only one dive
- No, because the answer is a number
- Yes, because it starts with “how many”
- Ms. Okoye’s class asks two questions. “How many pets does each of the 24 students have?” gets one answer from each student. “How many students are in the class?” gets one answer, 24. How many data values in all?
- Which rewrite turns “How many crew members are on Boat 3?” into a statistical question?
- How many crew members are on each boat in the fleet?
- How many crew members are on Boat 3 today?
- How many crew members are in the whole fleet in total?
- What is the name of the captain of Boat 3?
- Create your own problem. Write one statistical question about the reef or the ocean and one question that is not statistical. For the statistical question, say what data you would collect and why the answers would vary. Explain why the other question has only one answer.