NAME:



NAME: __________________________________ Stat & Data Analysis- Warm Up 5.2

Identify the numbers given as parameters or statistics:

1) According to , 13% of adults are left-handed. At a school administrator’s conference, 16% of those attending were left handed.

2) In an experiment to test the effectiveness of single-sex classrooms, girls assigned at random to a co-ed chemistry class gained an average of 12.2 points from a pretest to a posttest. Girls assigned randomly to a single-sex chemistry class taught by the same teacher gained 15.1 points.

3) Write instructions for selecting an SRS of 6 people from the names below. Start at label 01 and label down the columns. Then, perform the sample, starting at line 112 on the TRD (do not use the calculator). Write down the names you select.

Jim Matt Maria Amy Jason

John Pete Jenny Tom Justin

Suzy Dave Christine Chris Laura

Sarah Joe Megan Maureen Gretchen

4) Look at the pictures below and identify for each one whether it has high or low bias, and high or low variability. The arrow represents the true population parameter.

a) b)

c)

5) The two graphs below have different sample sizes. One was made with repeated samples of size 55 and the other was made with repeated samples of size 180. Identify which is which.

a) b)

[pic]

NAME: __________________________________ Stat & Data Analysis- Warm Up 5.2

Identify the numbers given as parameters or statistics:

1) According to , 13% of adults are left-handed. At a school administrator’s conference, 16% of those attending were left handed.

2) In an experiment to test the effectiveness of single-sex classrooms, girls assigned at random to a co-ed chemistry class gained an average of 12.2 points from a pretest to a posttest. Girls assigned randomly to a single-sex chemistry class taught by the same teacher gained 15.1 points.

3) Write instructions for selecting an SRS of 6 people from the names below. Start at label 01 and label down the columns. Then, perform the sample, starting at line 112 on the TRD (do not use the calculator). Write down the names you select.

Jim Matt Maria Amy Jason

John Pete Jenny Tom Justin

Suzy Dave Christine Chris Laura

Sarah Joe Megan Maureen Gretchen

4) Look at the pictures below and identify for each one whether it has high or low bias, and high or low variability. The arrow represents the true population parameter.

a) b)

c)

5) The two graphs below have different sample sizes. One was made with repeated samples of size 55 and the other was made with repeated samples of size 180. Identify which is which.

a) b)

[pic]

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