Intro Stats

Which of the following variables is most likely to be classified as nominal?

• length of a garden hose

• recorded rainfall for a day

• flower color

• weight of books on a shelf

collect, describe, and present data

• descriptive statistics

• inferential statistics

• discrete statistics

• qualitative statistics

1. define the problem
2. gather data
3. summarize data
4. communicate conclusions

• scientific method

• statistical method

• rhoades method

• euler method

Since populations are often too large, we take a

• sample

• statistic

• data (singular)

• experiment

What is the median of the data?

• 10

• 12

• 13

• 14

• 18

For the data set shown, what is the minimum?

{15, 20, 9, 8, 10, 20, 25, 17}

• 15

• 17

• 8

• 0

What is the Q1 of the data?

• 30

• 40

• 70

• 80

What is the IQR of the weekly car sales?

IQR = Q3 = Q1

• 10

• 6

• 4

• 3

Find the median, first quartile, third quartile, and interquartile range of the data.

• Median: 54

  First Quartile: 49

  Third Quartile: 67

  IQR: 18

• Median: 54

  First Quartile: 47

  Third Quartile: 71

  IQR: 24

• Median: 54

  First Quartile: 48

  Third Quartile: 69

  IQR: 22

• Median: 54

  First Quartile: 49

  Third Quartile: 69

  IQR: 20

How many students spent 7 hours doing homework that week?

• 1

• 3

• 5

• 6