WS1- Y7 Working Scientifically

What is the definition of accurate data?

• Data that is close to the true value of what you are measuring.

• Data that is always precise.

• Data that is collected quickly.

• Data that is easy to understand.

Answer explanation

Accurate data refers to information that closely reflects the true value of what is being measured. This definition distinguishes it from precision, speed of collection, or ease of understanding, which do not guarantee accuracy.

What does it mean to analyse data?

• To collect data from various sources.

• To look at data and write about what you have found out.

• To store data in a secure location.

• To delete unnecessary data.

Answer explanation

To analyse data means to examine it closely and interpret the findings. The correct choice highlights this process of looking at data and articulating insights, rather than merely collecting, storing, or deleting data.

What is an anomaly in data?

• A result that is very different from the other repeats of that measurement.

• A result that is exactly the same as all other measurements.

• A result that is slightly different from the average.

• A result that is not recorded.

Answer explanation

An anomaly in data refers to a result that is very different from other measurements. This makes the first choice correct, as it highlights significant deviations that may indicate errors or unique events.

What is a bar chart used for?

• Presenting data when both variables are continuous.

• Presenting data when one variable is discrete or categorical and the other is continuous.

• Presenting data when both variables are discrete.

• Presenting data when variables are not related.

Answer explanation

A bar chart is ideal for displaying data where one variable is discrete or categorical (like categories or groups) and the other is continuous (like measurements or counts), making it easy to compare values across different categories.

What is a categorical variable?

• A variable that has values that are dates.

• A variable that has values that are percentages.

• A variable that has values that are words.

• A variable that has values that are numbers.

Answer explanation

A categorical variable is one that represents categories or groups, typically expressed in words. This distinguishes it from numerical variables, which are represented by numbers or percentages.

What is a conclusion in an investigation?

• What you write down to state what you have found out during an investigation.

• A list of all the data collected.

• A prediction of future results.

• A summary of the method used.

Answer explanation

A conclusion in an investigation summarizes the findings, stating what has been discovered. It is not just a list of data, predictions, or methods, but rather the interpretation of the results obtained.

What does confidence in a conclusion mean?

• How quickly you reached the conclusion.

• How sure you are of your conclusion based on the data.

• How many people agree with your conclusion.

• How complex the conclusion is.

Answer explanation

Confidence in a conclusion refers to how sure you are of your conclusion based on the data. It reflects the strength of the evidence supporting your conclusion, rather than the speed of reaching it or the number of agreements.

What is a continuous variable?

• A variable that can take any numerical value.

• A variable that has values that are whole numbers only.

• A variable that has values that are words.

• A variable that has values that are fixed.

Answer explanation

A continuous variable can take any value within a range, including fractions and decimals, making the first choice correct. The other options describe discrete variables or non-numeric values.

What is a control measure?

• A way to ensure data accuracy.

• Something you put in place to reduce the risk of a hazard causing harm.

• A technique to improve data analysis.

• A method to increase the speed of an experiment.

Answer explanation

A control measure is specifically designed to mitigate risks associated with hazards, ensuring safety and preventing harm. This aligns with the correct choice, which emphasizes reducing risk.

What is a control variable?

• A variable that is always constant.

• A variable that is not measured.

• A variable that you have to keep the same in an investigation.

• A variable that changes during an experiment.

Answer explanation

A control variable is one that you keep constant throughout an investigation to ensure that the results are due to the independent variable. This helps maintain the integrity of the experiment.