Univariate
What is the most frequently occurring value called in a data set?
What is the Mode?
What is the order of a matrix the following matrix?
|5 6 |
|6 5 |
What is a 2 by 2 Matrix?
What are the points in a graph or network called?
What are Verticies?
What type of graph is used to display the relationship between two numerical variables?
What is a scatterplot?
What is the original amount of money invested or borrowed called?
What is the Principal
Calculate the mean of: 4, 6, 8, 10.
What is 7?
Calculate:
|1 2| + |4 1|
|3 4| |2 5|
What is |5 3|
|5 9|
If vertex A is connected to vertices B, C and D, what is the degree of vertex A?
What is 3?
If the number of hours studied increases and test scores also tend to increase, what type of association is present?
What is Positive Association?
Calculate the simple interest earned on $1000 invested at 5% per annum for 2 years.
What is $100?
Find the median of: 15, 11, 7, 3, 8
What is 8?
Calculate:
3|2 -1|
|0 4|
What is: |6 -3|
|0 12|
A connected graph has exactly two odd vertices. What type of route is possible?
What is an Eulerian trail?
A scatterplot has a correlation coefficient of (r=-0.92). Describe the strength and direction of the association.
What is Strong negative linear association?
An investment of $5000 earns 6% interest per annum, compounded monthly. What is the monthly interest rate?
What is 0.5% per month?
A data set has a minimum of 2, Q1 = 4, Q3 = 10 and a maximum of 12. Calculate the range and IQR.
What is Range = 10, IQR = 6?
Calculate: |1 2| |2|
|3 1| |4|
What is |10|
|10|
A network has the following distances: A–B = 4 km, B–D = 3 km, A–C = 2 km and C–D = 8 km. Find the shortest distance from A to D.
What is 7 km (A–B–D)?
A regression equation is (y=5+2x). Predict the value of y when x = 7.
What is 19?
Calculate the final balance of $2000 invested at 4% per annum, compounded annually for 3 years.
What is $2249.73?
A data set has Q1 = 12 and Q3 = 20 determine whether a value of 38 is an outlier.
What is Yes. IQR = 8, upper fence = 32. Since 38 is greater than 32, it is an outlier.
Calculate the determinant of
|2 1|
|3 4|
What is det(A)=(2times4)-(1times3) = 5?
A network has five edges: AB = 2, AC = 5, BC = 1, BD = 4 and CD = 3. Find the minimum spanning tree and its total weight.
What is BC = 1, AB = 2 and CD = 3. Total weight = 6?
A regression equation is (y=4+1.5x). The original data had x-values between 10 and 30. Predict y when x = 40 and identify whether this is interpolation or extrapolation.
What is y = 64. Extrapolation, because 40 is outside the original data range.
A loan of $6000 has an interest rate of 4.2% per annum, compounded monthly. Calculate the balance after 12 months.
What is $6257.02?