L to J Item analysis
Math8 - Most Missed Question
Week 28: Vocabulary: A product of an integer and itself.
Answer: perfect square
Week 27: Geometry: Charlie's family is building a deck on the back of their house. The plans are drawn to a scale of 1/4 inch = 1 foot. What is the area of the actual deck? (a diagram was provided)
Answer: 112 sq ft (15 out of 28 missed this)
Week 27: Vocabulary: A two-dimensional system in which a location is described by its distances from two intersecting, usually perpendicular, straight lines called axes.
Answer: coordinate plane (15 out of 28 missed this)
Week 26: Vocabulary: Figures that have the same shape, but not necessarily the same size.
Answer: similar figures (21 out of 28 missed this)
Week 25: Vocabulary: Two events in which the outcome of the first event does not affect the outcome of the second event.
Answer: independent events (26 out of 28 missed this)
Week 24: Vocabulary: An arrangement of information or data into columns and rows
Answer: table (24 out of 29 missed this)
Week 23: Vocabulary: Finding the probability of an event without doing an experiment or analyzing data
Answer: Theoretical probability
Week 22: Geometry: Which set of side lengths belong to a right triangle?
Answer: 5, 12, 13
Week 21: Vocabulary: Having length and width
Answer: 2-dimensional (28 out of 29 missed this)
Week 20: Vocabulary: The product of a whole number and any other whole number
Answer: multiple
Week 19: Vocabulary: An equation showing that two ratios are equal
Answer: proportion (31 out of 31 missed this)
Week 18: Vocabulary: mark points on a graph
Answer: plot (22 out of 28 missed this)
Week 17: Vocabulary: A three-dimensional figure that has two congruent and parallel faces that are polygons. The rest of the faces are parallelograms.
Answer: prism (16 out of 26 missed this)
Week 16: Vocabulary: Two events that cannot occur at the same time
Answer: mutually exclusive (30 out of 30 missed this)
Week 15: Vocabulary: A number that is a multiple of two or more numbers
Answer: common multiple (27 out of 27 missed this)
Week 14: Vocabulary: A number that can be expressed as a ratio of two integers where the denominator is non-zero.
Answer: rational number (22 out of 24 missed this)
Week 14: Vocabulary: A form of writing as the product of a power of ten and a decimal number 1≤c<10
Answer: scientific notation (22 out of 24 missed this)
Week 13: Vocabulary: A comparison of 2 numbers or measures using division with the same labels.
Answer: ratio (26 out of 26 missed this)
Vocabulary: A line, segment, or ray drawn on a scatter plot to estimate the relationship between two sets of data.
Answer: line of best fit (26 out of 26 missed this)
Week 12: Vocabulary: A way to display how often an item, number or range of numbers occurs.
Answer: frequency chart (29 out of 29 missed this)
Vocabulary: A group of items or events. Placing these items or events in a different order does not create a new arrangement to count.
Answer: combination (29 out of 29 missed this)
Week 11: Number Sense: Which sets of numbers all include zero as a member?
Answer: Whole, Integers, Rational, Real
Algebra II - Most Missed Question
Week 28: Geometry: Given a 30-60-90 triangle with short leg 14. What is the value of x (the long leg) in the triangle?
Answer: 14√3
Week 27: Algebra: Describe the graph of this system: y=3x+1 and y=-1/3x-4.
Answer: 2 perpendicular lines (13 out of 31 missed this)
Week 26: Algebra: What is the inverse of f(x)=2x+1?
Answer: f^-1(x)=(1/2)x-(1/2) (13 out of 31 missed this)
Week 25: Geometry: What is the midpoint of the segment with the given endpoints: (-1,5) and (7,3)?
Answer: (3,4) (14 out of 29 missed this)
Week 24: Geometry: Which is the distance from (3,5) to (-1,-4)?
Answer: √97 (26 out of 30 missed this)
Week 23: Algebra: Which expression is the quotient of (x^3 - 8) / (x - 2)?
Answer: x^2 + 2x + 4 (22 out of 25 missed this)
Week 22: Geometry: The ratio of the volumes of two similar prisms is 27:125. What is the ratio of their surface areas?
Answer: 9:25 (19 out of 33 missed this)
Week 21: Algebra: What number decreased by 28 is less than or equal to 3 times its opposite?
Answer: n≤7 (28 out of 35 missed this)
Week 20: Geometry: What is the measure of the angle made by the minute and hour hand of a clock at 3:30?
Answer: 75 degrees (26 out of 34 missed this)
Week 19: Probability: In a 52 card deck, there are 13 hearts, 13 diamonds, 13 spades and 13 clubs. During a card game, you are dealt 4 hears and a spade. What is the probability that the next card you are dealt is not a heart?
Answer: 38/47 (15 out of 34 missed this)
Week 18: Geometry: The outlines of the pool and the patio around the pool are similar rectangles. Find the ratio of the area of the patio to the area of the pool.
Answer: 5/4 (25 out of 32 missed this)
Week 17: Geometry: The area of a square is 16. The coordinates of one corner are (4,5). Which ordered pair could be the coordinates of a diagonally opposite corner?
Answer: (0,1) (15 out of 35 missed this)
Week 16: Geometry: Which expression could be used to find AB? (The question included a triangle with angle B 25 degrees, the opposite side of 8, and AB is the hypotenuse.)
Answer: 8/sin 25 (27 out of 34 missed this)
Week 15: Probability: The probability that a student passes mathematics is 5/6 and the probability that he passes English is 7/12. If the probability that he will pass at least one subject is 7/8, what is the probability he will pass both subjects?
Answer: 13/24 (5/6 + 7/12 - 7/8) (19 out of 33 missed this)
Week 14: Algebra: What is the domain and range of y=4x^2+4?
Answer: domain: all real numbers; range: y≥4
Week 13: Geometry: On a scale drawing, 1 inch represents 100 feet. A circular pool with the radius of 50 feet covers about how many square inches on the drawing?
Answer: 0.75 inches (27 out of 34 missed this)
Week 12: Geometry: What type of quadrilateral is PQRS, with vertices P(1,5), Q(5,5), R(7,1), S(2,1)?
Answer: Trapezoid (25 out of 36 missed this question)
Week 11: Data Analysis: Six different books are on a shelf. In how many ways can you arrange them?
Answer: 720 (The Fundamental Counting Principle calculates the number of ways items can be put together by finding the product of all the choices. In this case, 6*5*4*3*2*1 = 720.) (27 out of 31 students miss this.)
Advanced Math - Most Missed Question
Week 28: No questions were missed.
Week 27: 3 questions each had 1 miss
Week 26: Algebra: What is the inverse of f(x)=2x+1?
Answer: f^-1(x)=(1/2)x-(1/2)
Week 25: Geometry: What is the midpoint of the segment with the given endpoints: (-1,5) and (7,3)?
Answer: (3,4)
Week 24: Number Sense: Which number is -4^2 simplified?
Answer: -16 (5 out of 7 missed this)
Week 23: Geometry: Luke cut a circle with a radius of 5 inches from a piece of paper. The paper was a 10 inch square. Which estimation is closest to the area of the remaining paper?
Answer: 20 square inches (4 out of 6 missed this)
Week 22: Geometry: The ratio of the volumes of two similar prisms is 27:125. What is the ratio of their surface areas?
Answer: 9:25 (4 out of 7 missed this)
Week 21: Algebra: What number decreased by 28 is less than or equal to 3 times its opposite?
Answer: n ≤ 7 (4 out of 7 missed this)
Week 20: Geometry: What is the measure of the angle made by the minute and hour hand of a clock at 3:30?
Answer: 75 degrees (4 out of 5 missed this)
Week 19: Probability: In a 52 card deck, there are 13 hearts, 13 diamonds, 13 spades and 13 clubs. During a card game, you are dealt 4 hears and a spade. What is the probability that the next care you are dealt is not a heart?
Answer: 38/47 (3 out of 7 missed this)
Week 18: Geometry: The outlines of the pool and the patio around the pool are similar rectangles. Find the ratio of the area of the patio to the area of the pool.
Answer: 5/4 (4 out of 6 missed this)
Week 18: Geometry: Given distance d between the two points, which value is x? (0,1), (x,4); d=√34.
Answer: -5 (4 out of 6 missed this)
Week 17: Algebra: Which is the simplest form of (p^-7)^-7?
Answer: p^49 (1 out of 6 missed this)
Week 16: Geometry: Which expression could be used to find AB? (The question included a triangle with angle B 25 degrees, the opposite side of 8, and AB is the hypotenuse.)
Answer: 8/sin 25 (5 out of 6 missed this)
Week 15: Probability: The probability that a student passes mathematics is 5/6 and the probability that he passes English is 7/12. If the probability that he will pass at least one subject is 7/8, what is the probability he will pass both subjects?
Answer: 13/24 (5/6 + 7/12 - 7/8) (5 out of 7 missed this)
Week 14: Data Analysis: There are 7 people in a committee. How many ways are there to elect a chairperson and a recorder?
Answer: 42 (3 out of 7 missed this)
Week 13: Geometry: On a scale drawing, 1 inch represents 100 feet. A circular pool with the radius of 50 feet covers about how many square inches on the drawing?
Answer: 0.75 inches (5 out of 7 missed this)
Week 12: Geometry: What type of quadrilateral is PQRS, with vertices P(1,5), Q(5,5), R(7,1), S(2,1)?
Answer: Trapezoid (4 out of 6 missed this question)
Week 11: Geometry: Which is the distance between two points with coordinates (3,4) and (-3,-4)?
Answer: 10 (3 out of 7 students missed this.)