1. The following data represents the number of stickers that 3rd grade students have on their notebook. 10, 20, 10, 5, 10, 5, 10, 10 a. Find the Mode (2 pts): 10 b. Find the Median (2 pts): 10 c. Compute the Mean (3 pts): X = X N d. Compute the Standard Deviation using the following formula (show all work by both completing the table as well as showing your work for completing the formula) (12 pts). *double check that you computed the mean correctly before using it to compute the SD below. (X-X) X-X 80/8 = 10 2. Examine the following histogram and answer the questions that follow. a. Describe the Modality (unimodal, bimodal, multimodal). (3pts) __unimodal because it has only one mode b. Is it normally distributed? YES or NO & Explain your decision. (3pts) No, it is not normally distributed because it does not have any shape (bell curve) and nor is it symmetrical. c. Is it skewed? YES or NO & If yes, also specify the type (positive or negative). (3pts) 3. A researcher believes that teacher feedback in the form of praise will result in students' higher test scores. He studied the difference in test scores between a group of fifth graders who received praise for the hard work and a group of fifth graders that did not receive any praise for their hard work. a group of fifth grade students a. Who is the population in this study? (3pts). b. What is the Dependent Variable? (3pts) c. What is the Independent Variable? (3pts) d. Identify all of the levels of the Independent Variable (2pt): e. Write the Hypothesis of this study (4pts): 4. A swim coach timed how long it took his swimmers to swim a lap. He measured their swim times in seconds. The swim times (in seconds) for each swimmer are listed below. 50, 51, 52, 51, 50, 50, 52, 50, 52, 50 First Create a frequency table of the results. For each swim time be sure to include the frequency, N, the percentage, total percentage, the relative frequency, and the cumulative frequency (10pts) Swim Time ("score") f % cf