Formulas
When you find the sum of all scores, then divide it by the number of scores, what are you finding?
The mean.
What is the word used for "a letter in place of a number"?
Variable or pronumeral
Is the formula for the volume of a sphere on the formula sheet?
Yes.
When Pearson's Correlation Coefficient r = 0.8, describe the type of relationship in terms of direction and strength.
Positive and Strong
What is my first name?
Sarah
What trig rule involves 3 sides and 1 angle?
Cosine Rule
What is also equal to the maximum flow in a network?
Minimum Cut.
What is the difference between the area of a trapezium formula and the Trapezoidal Rule?
Equals sign becomes approximately equal to; a and b become df and dl.
The cost of electricity is 30.13 cents per kWh. Calculate the cost of using a 650 W air conditioner for 6 hours.
$1.18
What school did I work at before KHS?
Trono High
Which formula do you use when you earn interest that compounds each time period?
FV = PV (1 + r)n
Define "break even".
When neither a profit or a loss is made - the income and expenses are equal.
Which version of the sine rule is on the formula sheet?
"a" on top of the fraction - i.e. solve for a side.
How many mL in 1.2L?
1200L
Where did Ms Swamy and I go at the start of the year with a group of students?
Borneo (Malaysia).
When finding the equation for least-squares line of regression, which type of line do we model for our equation?
A linear line.
In the topic of networks, what is a walk but with NO repeated edges, and NO repeated vertices?
A Path.
What percentage of scores are between a z-score of -2 and 2?
95%
Sydney's time zone is +10 UTC, and Wellington is +12 UTC. If it is 4pm in Sydney, what is the time in Wellington?
6pm
What is my favourite tv show?
The Office (US Version)
When do you use sin to find the area of a triangle?
When the triangle is a non-right-angled triangle.
A hyperbola is the graph of a...
Reciprocal function or inverse variation.
Complete the following:
Absolute error =
1/2 x precision
3 years ago, the price of a uniform was $180. Due to inflation, the price increased annually by 2.5%. What is the current price of the uniform?
$193.84
When is my birthday?
9th Feb