Question

Ryan has many (over a hundred) houseplants of many different types including philodendrons, ferns, spider plants, cacti, tomatoes, pineapples, etc. Suppose I decided to test the effect of caffeine on the growth rate of plants as follows. First I label each of Ryan's plants with a number. I then record the height of each plant. Then I water all of the indoor plants with only room temperature coffee for a month, and continue watering the outdoor plants with water as usual. At the end of the month the height of each plant is recorded again. The amount each plant has grown during the month is then used to test the claim that plants that are given caffeine grow faster than plants that are not given caffeine.

Complete the following statements.

1)This study is an example of a(n) _________

Experiment, Observation Study, or Confidence Interval

2) The numerical labels given to the plants are an example of __________

Quantitative or Categorical

3) The heights recorded at the beginning and end of each month are an example of ____________

Quantitative or Categorical

4) For the indoor plants, the recorded heights at the beginning and end of the month are _______

A pair of Independent Samples or A matched pairs Data Set

5) At the end of the month, we now have the amount that each indoor plant has grown (data set 1) and the amount that each outdoor plant has grown (data set 2). These two data sets are _________

A pair of Independent Samples or A matched pairs Data Set

6) The study as described above is _________

Sound or Flawed

Answer 1

1)This study is an example of a(n) _________

Experiment

2) The numerical labels given to the plants are an example of __________

Categorical

3) The heights recorded at the beginning and end of each month are an example of ____________

Quantitative

4) For the indoor plants, the recorded heights at the beginning and end of the month are _______

A matched pairs Data Set

5) At the end of the month, we now have the amount that each indoor plant has grown (data set 1) and the amount that each outdoor plant has grown (data set 2). These two data sets are _________

A pair of independent samples

6) The study as described above is _________

Sound