110 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 0 18 0.1636 18 1 9 0.0818 27 2 12 0.1091 39 3 13 0.1182 52 4 17 0.1545 69 5 12 0.1091 81 6 16 0.1455   7     110 a.  Complete the table (Use 4 decimal places when applicable) b.  What is the cumulative relative frequency for flossing 1 time per week? %

Answer numbers 4 to 7

Identify the level of measurement of the data , and explain what is wrong with the given calculation.In a set of data , blood lead levels are represented as 1 for low , 2 for medium , and 3 for high . The average ( mean ) of the 642 blood lead levels is 1.3

3.4.2 2. Find the following z-scores: a. Za10 b. Zo975 c. Z,005 0.15 e. Z30 "0.80 f. Z 0.30

Listed below are the measured radiation absorption rates (in W. 5-number summary. 1.12 0.52 0.51 0.92 0.7

70 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 10 10 1 0.1 17 2 10 0.1429 27 8. 0.1143 35 4 7. 0.1 42 ? 0.1286 51 6 0.1 12 0.1714 70 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 2 times per week?

The following items represent the number of birds observed at a given feeder over the past several days. What is the mean number of birds to visit that feeder? 49, 29, 37, 50, 86, 60, 33 Round to 2 decimal places as needed Your Answer: Answer

This data was collected from the members of our class. I have tried to remove anything that would identify an individual. 1. What is the scale of each variable? 2. Construct a frequency table and chart showing the distribution across gender in this class. 3. Construct a cross tabulation with Gender in one direction and Height in the other direction. Group the height category into 5 groups. 4. Is there a difference in the age distribution across gender? 5. Give a summary of our class based on this data about our class.   Gender Height Year Born Male 76 1994 Male 72 1983 Female 65 1997 Male 68 1966 Female 67 1997 Male 70 1996 Male 71 1996 Male 73 1996 Male 72 1995 Male 71 1998 Male 73 1993 Female 66 1980 Female 62 1998 Male 76 1984 Female 70 1985 Female 62 1992 Female 62 1992 Male 73 1996 Female 68 1987 Male 60 1971 Female 60 1971 Male 60 1971 Male 74 1970 Male 77 1998 Male 77 1998 Male 68 1990 Female 64 1996 Male 80 1997 Male…

None

The table below has a total of 82 values.  Find the median for the following Grouped Frequency Data Table (GFDT).  Lower Class Limit Upper Class Limit Frequency 40 44 5 45 49 9 50 54 4 55 59 3 60 64 8 65 69 12 70 74 10 75 79 18 80 84 13 median =