Math10-Q4-W... O .. . Activities Activity 1 The following measurements are weights of dogs in a city veterinary clinic (in pounds): 65, 63. 68, 59, 74, 59, 68, 61, 64. 60, 69, 72, 55, 64, 56, 67. 55, 73, 59, 60, 65. Weights Frequency a. Complete the table including the lower boundaries and 55-58 cumulative frequencies. 59-62 b. Which interval contains the median? 63-66 C. Which interval contains the upper quartile? 67-70 d. What is the 75" percentile of this distribution? 71-74 Activity 2: People in the house Using the data below, answer the questions that follow. 10 1. Find the data values corresponding to the 30" Percentile. 2. Find the data values corresponding to the 2" Quartile. 3. Find the data values corresponding to the 43" Percentile. 4. Find the data values corresponding to the 8" Decile. 5. Find the data values corresponding to the 55" Percentile. Activity 1.3: Find your past friends Consider the score of your 90 friends plays with you at the range of their ages. AGE Frequency 1-5 17 6 -10 14 11 -15 9 16-20 25 MATH 10 QUARTER 4 WEEK 2 Page 7 | 9 21 -25 7 26 - 30 18 Make a table for Cumulative Frequency, then use the percentile rank formula for grouped data and solve: 1. Percentile Rank 21, (P21) 2. Decile Rank 6, (Do) 3. Percentile Rank 75, (P15) 4. Quartile Rank 2, (Q2) 5. Percentile Rank 56, (Ps) REMEMBER: QUARTILE DECILE PERCENTILE " Derile Percentile 328 Quartile 75 Percentile Quartain 5" Decile 50 Percentile 1* Quartile 259 Percentile 2" Decide 20 Percentile entile