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Roselle Common Core Content Mathematics Standards Unit 5 Honors Algebra Grade 8 Concept Statistics and Probability Strand Investiga te patterns of associati on in bivariate data. Standard Learning Expectations We are learning to/that… 1. Construct and interpret scatter plots for bivariate measurement data to investigate patterns of association between two quantities. Describe patterns such as clustering, outliers, positive or negative association, linear association, and nonlinear association. Construct and interpret scatter plots for bivariate measurement data to investigate patterns of association between two quantities. Evidence We can… Unit Unit J Describe patterns such as clustering, outliers, positive or negative association, linear association, and nonlinear association. -Explain the relationship between the wife’s age and the husband’s age. -Predict the husband’s age if the wife is 40 years old. -What is the correlation of this graph? (positive, negative, neither) or (linear/nonlinear association) 2. Know that straight lines are widely used to model relationships between two quantitative variables. For scatter plots that suggest a linear association, informally fit a straight line, and informally assess the model fit by judging the closeness of the data points to the line. J Know that straight lines are widely used to model relationships between two quantitative variables. For scatter plots that suggest a linear association, informally fit a straight line, and informally assess the model fit by judging the closeness of the data points to the line. Create the line of best fit for CAR © Bormann & Wright 1 Roselle Common Core Content Mathematics Standards Unit 5 Honors Algebra Grade 8 Concept Strand Standard Learning Expectations We are learning to/that… Evidence We can… Unit Unit scatter plot that suggest a linear association. Create the line of best fit for scatter plot that suggest a linear association. Statistics and Probability (continued) Investiga te patterns of associati on in bivariate data. (continu ed) 3. Use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercept. For example, in a linear model for a biology experiment, interpret a slope of 1.5 cm/hr as meaning that an additional hour of sunlight each day is associated with an additional 1.5 cm in mature plant height. Use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercept. 4. Understand that patterns of association can also be seen in bivariate categorical data by displaying frequencies and relative frequencies in a two-way table. Construct and interpret a two-way table summarizing data on two categorical variables collected from the same subjects. Use relative frequencies calculated for rows or columns to describe possible association between the two variables. For example, collect data from students in your class on whether or not they have a curfew on school nights and whether or not they have assigned chores at home. Understand that patterns of association can also be seen in bivariate categorical data by displaying frequencies and relative frequencies in a twoway table. CAR © Bormann & Wright J For example, in a linear model for a biology experiment, interpret a slope of 1.5 cm/hr as meaning that an additional hour of sunlight each day is associated with an additional 1.5 cm in mature plant height. Collect data from students in your class on whether or not they have a curfew on school nights and whether or not they have assigned chores at home. Is there evidence that those who have a curfew also tend to have chores? J Construct and interpret a twoway table summarizing data on two categorical variables collected from the same subjects. Use relative frequencies calculated for rows or columns to describe possible association between the two variables. 2 Roselle Common Core Content Mathematics Standards Unit 5 Honors Algebra Grade 8 Concept Strand Standard Learning Expectations We are learning to/that… Evidence We can… Unit Unit Is there evidence that those who have a curfew also tend to have chores? CAR © Bormann & Wright 4.4.8A 1. Select and use appropriate representations for sets of data, and measures of central tendency (mean, median, and mode). Type of display most appropriate for given data Box-and-whisker plot, upper quartile, lower quartile Calculators and computer used to record and process information Finding the median and mean (weighted average) using frequency data Effect of additional data on measures of central tendency 2. Make inferences and formulate and evaluate arguments based on displays and analysis of data sets. 4. Use surveys and sampling techniques to generate data and draw conclusions about large groups. 4.4.8B Probability 1. Interpret probabilities as ratios, percents, and decimals. 2. Determine probabilities of compound events. 3. Explore the probabilities of conditional events (e.g., if there are seven marbles in a bag, three red and four green, what is the probability that two marbles picked from the bag, without replacement, are both red). J The table below shows the ages of the students in Elaine’s class. To the nearest tenth of a year, what is the mean, median and mode of the 30 students’ ages? Student age 12 13 14 # of students 1 4 25 Jeremy has a fair coin and number cube with the sides labeled one through six. What is the probability of getting both a head on a toss of the coin and a four on a roll of the number cube? K Design a spinner that has the following probabilities: 3 Roselle Common Core Content Mathematics Standards Unit 5 Honors Algebra Grade 8 Concept Strand Standard Learning Expectations We are learning to/that… Evidence We can… 4. Model situations involving probability with simulations (using spinners, dice, calculators and computers) and theoretical models. 5. Estimate probabilities and make predictions based on experimental and theoretical probabilities. 6. Play and analyze probabilitybased games, and discuss the concepts of fairness and expected value. P(red)= 3 ; P(blue)=25%; P(yellow)=12.5%; 4.4.8C. Discrete Mathematics – Systematic Listing and Counting 1. Apply the multiplication principle of counting. Permutations: ordered situations with replacement(e.g., number of possible license plates) vs. ordered situations without replacement (e.g., number of possible slates of3 class officers from a 23 student class) Factorial notation Concept of combinations (e.g., number of possible delegations of 3 out of 23 students) 2. Explore counting problems involving Venn diagrams with three attributes (e.g., there are 15, 20, and 25 students respectively in the chess club, the debating team, and the engineering society; how many different students belong to the three clubs if there are 6 students in chess and debating, 7 students in chess and CAR © Bormann & Wright Unit Unit 8 P(white)=remaining section. Design means to draw your spinner and label each section with its appropriate color and probability. Is this a fair spinner? Why or why not? Explain your reasoning Devise a fair game using this spinner. Describe your game. K Number of possible license plates Ordered situations without replacement Number of possible combination of 3 class officers from a 23 student class There are 15, 20, and 25 students respectively in the chess club, the debating team, and the engineering society; how many different students belong to the three clubs if there are 6 students in chess and debating, 7 students in chess and engineering, 8 students in debating and engineering, and 2 students in all three? 4 Roselle Common Core Content Mathematics Standards Unit 5 Honors Algebra Grade 8 Concept Strand Standard Learning Expectations We are learning to/that… Evidence We can… Unit Unit engineering, 8 students in debating and engineering, and 2 students in all three?). 3. Apply techniques of systematic listing, counting, and reasoning in a variety of different contexts. 4.4.8D. Discrete Mathematics-VertexEdge Graphs and Algorithms 1. Use vertex-edge graphs and algorithmic thinking to represent and find solutions to practical problems. Finding the shortest network connecting specified sites Finding a minimal route that includes every street (e.g., for trash pick-up CAR © Bormann & Wright The above graph shows the distance between 7 different people’s homes. Find the shortest route for Person A to travel to each other home. Person A must start and end at their home. 5