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Worksheets9.3 - End of cycle assessment
Total questions: 23
Worksheet time: 27mins
Which of the following is the most accurate definition of data science?
Data science is extracting meaning from large data sets in order to provide insights to support decision-making
Data science is using computers to analyse data and to perform calculations on the data to produce information
Data science is performing experiments and recording the data produced by those experiments
Data science is writing code to make sure that any inaccuracies in data sets are spotted and removed (cleaned)
Which of the following best describes a data visualisation?
Presenting related data so that a user can see individual items of data
Making sure that data is accessible and that no data is hidden
A visual representation that communicates relationships among the data
A collection of graphs that tell a story when put together
Is the following a visualisation or an infographic?
Visualisation
Infographic
What is meant by a correlation?
The relationship between two or more variables
When there is an upward trend in a graph
When there is a set of data that doesn’t lie in the normal or expected range
When data is placed in a graph
The visualisation below plots life expectancy (y-axis) against time (x-axis). What type of correlation does this visualisation show from 1949 onwards?
Positive
Negative
Neutral
No correlation is visible
The following graph shows the annual average temperatures recorded by a weather station over a period of 20 years. Identify the outlier in the data.
Point A
Point B
Point C
Point D
Which of the following is the correct order of the investigative cycle?
Problem, data, plan, analysis, conclusion
Conclusion, plan, problem, data, Analysis
Plan, problem, analysis, data, conclusion
Problem, plan, data, analysis, conclusion
In which step of the cycle would you pose the question(s) that you will use data to help you answer?
Data
Analysis
Plan
Problem
In which step of the cycle would you cleanse the data?
Data
Analysis
Plan
Problem
In which step of the cycle would you work out where the data will come from or how you will collect it?
Data
Analysis
Plan
Problem
Name one output device that is built into the micro:bit.
Name at least two input devices that are built into the micro:bit:
You would like to build a micro:bit project that provides audio feedback to the user, e.g. a beep or a short tune. Which of the following sentences is true?
It is not possible to generate audio output with the micro:bit.
It is possible to generate audio output with the micro:bit, by connecting speakers to the built-in audio port.
It is possible to generate audio output with the micro:bit, by connecting speakers to the GPIO pins.
Which sensor, built into the micro:bit, would be used in order to detect ‘gestures’, such as shaking or titling?
Radio antenna
Accelerometer
Magnetometer
In the picture, the LED is supposed to be controlled (turned on or off) using pin 0. The arrow shows that one of the crocodile clips has not been connected to a pin. Which pin should it be connected to?
A.
B.
Power (3V)
Ground (GND)
In Figure 1, you are supposed to use pin 0 to control the LED (turn it on or off). Which piece of code would you use to turn the LED on, assuming the wiring is correct?
pin0 = 1
pin0.read_digital() == 1
pin0.write_digital(1)
In the picture, pin 0 is to be used to detect if a connection is made between the two jumper wires. The arrow indicates that one of the crocodile clips has not been connected to a pin. Which pin should it be connected to?
Power (3V)
Ground (GND)
In the picture, pin 0 is to be used to detect if a connection is made between the two jumper wires. Which piece of code would you use to check if the wires are connected, assuming the wiring is correct?
pin0 == 1
pin0.read_digital() == 1
pin0.write_digital(1)
pin0.is_touched()
When this program is executed, what will the user see on the micro:bit display after button A has been pressed once?
When this program is executed, what will the user see on the micro:bit display after button A has been pressed twice?
When will line 7 of this program be executed?
Line 7 will never be executed.
Line 7 will be executed once, after button A has been pressed twice.
Line 7 will be executed every time button A is pressed.
Line 7 will be executed constantly, i.e. in every round of the while loop.
What should go in the gap in line 9 of this program, so that the value of the elapsed variable is the (approximate) number of seconds between the time that line 4 was executed and the time that line 8 was executed.
Note: The running_time function returns the number of milliseconds (thousandths of a second) since the micro:bit was switched on or restarted.
Describe in one short sentence the purpose of lines 5 to 7 in this program
