Enriched Stat & Probability Review

The salary of the employees in the office were $15,000; $18,000; $16,000; $14,000; $90,000; and $17,000.  What is the best measure of the central tendency of the salaries?

• Mean
• Median
• Mode
• Range

When analyzing numerical data, the best measure of center with NO outlier is:

• mean

• median

• mode

• range

To determine how many students plan to attend the school musical, Maria surveys 100 random people in the hallway.

• Biased

• Unbiased

• Unbiased Systematic, 30

• biased voluntary, 30

• biased convenience, 45

• Unbiased simple random, 45

The local gym is deciding if customers that want more gym classes. The gym surveys 50 gym customers a day. How could the gym improve their sampling method?

• Ask 60 customers

• Go to mall and ask 50 people

• Ask the first 5 customers

What is the IQR of the following Data Set:

32, 35, 36, 39, 40, 44, 48, 49

• Q1:35

  Q2: 39

  Q3: 46

  IQR: 46 - 35 = 11

• Q1: 35

  Q2: 39

  Q3: 48

  IQR: 48 - 35 = 13

• Q1: 35

  Q2: 39

  Q3: 44

  IQR: 44 - 35 = 9

• Q1: 35

  Q2: 39

  Q3:46

  IQR: 39 - 35 = 4

Which car club attends more car shows?

• Cruisers
• Car Hops

What percent of students have a height between 58 inches and 60 inches?

• 25%
• 50%
• 75%
• 100%

Which M.A.D. would show the most consistency?

• .5
• 1
• 1.5
• 2