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Question

Directions: Complete each of the tasks outlined below. Task 1 For 7 days keep track of the number of pieces of mail you receive at your home. a. Put your data into a frequency table having intervals of 0–4, 5–9, 10–14, and 15–19. b. Use the frequency table to create a histogram of the data. c. Doyounoticeanypatternsinthehistogram? Task 2 a. Pick 9 different dog breeds and find their average weights. List each breed and weight. Find the mean, median, and mode of the data. Which measure of central tendency best describes the data? Explain your answer. b. How much would a 10th dog have to weight for the average weight in part (a) to be 250 pounds? Explain how you determined your answer. Task 3 Pick a city in Maryland and determine the average high temperatures for each month. Record this in a table. a. Create a box-and-whisker plot for the data. b. What is the median temperature? c. 75%ofthetemperaturesarebelowwhatvalue?Howdoyouknow? d. 75% of the temperatures are above what value? How do you know? e. What conclusions can you draw about the temperature in Maryland?

Answer 1

1. Mean is the average, which is found by adding up all the values in a data set, then dividing by the # of entries.
2. Median is the middle number, so you would need to rank the values, either from highest to lowest or lowest to highest, then find the value in the middle of the table.
3. Mode is the number that appears most in the data set.

Anything else would be specific to the data that you gather.