1. Use systematic sampling technique to select 6 numbers between 1 and 90. 2. Out of 32 students in our class 9 are on an active military duty, which is 9/32=0.28=28%.
Does this statement represent Descriptive or Inferential Statistics?
If you decide it’s Descriptive, modify it to make Inferential. 3. Present following data in Steam and Leaf display:
12, 24, 36, 22, 26, 55, 32,44, 33, 48, 25, 35, 36, 41, 28 4. Based on the Box Plots below, answer the following questions:
a) what is the Interquartile Range (IQR) for Female (roughly)?
b) between what numbers (roughly) are top 25% results for Male? 5. Find the Median and Quartiles for the following set of data:
18, 30, 25, 12, 10, 16, 20, 40; 6. Calculate Sample Standard Deviation for the following data collection:
11, 18, 20, 25, 28, 42 7. Find 80th percentile for the following data collection:
Tip: See A Formula for Finding the kth Percentile in Illowsky, Chapter 2 page 90.
11, 12, 14, 20, 22, 24, 26, 30, 32, 34, 40, 42, 48, 50, 52, 56, 58. 8. Interval
10 – 20
20 – 30
30 – 40
40 – 50 Frequency
12
10
8
6 Calculate the Mean for the given Grouped
Frequency Table:
ScholarMatic: Explanation & Answer
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