Chapter 1 Flashcards
What are the steps in calculating the standard deviation of a sample?
- Subtract the mean from each value
- Sum the squares of each answer
- Divide the answer by n(sample size) - 1
- Square the answer
What is the formula to work out Fahrenheit from Celsius?
F = 32 + 9/5 C
C= 5/9 (F - 32)
What is the approximately the population of the UK
66000000 , 66 million
What is the world population?
7.8 billion
What is the population of London?
9.3 million
What is the capacity of a coach?
56 people
What is the capacity of a train carriage?
80
What is UK motorway speed limit?
70 mph
How do you calculate the volume of a cuboid?
length x width x height
how to calculate surface area
sum of areas of all the faces
How to calculate average speed?
total distance / time
How to calculate average velocity?
total displacement / time
what is the symbol of implies?
⇒
Does a positive correlation mean there is a relation?
No, correlation does not imply causation
what is the value of perfect positive correlation?
+1
