Grades from our class are here.

Find

• mean
• median
• mode
• range
• standard deviation

Find the percentile of the following grades

1. 91
2. 94
3. 74

Find what grade would match the following percentile:

1. 50%
2. 25%
3. 90%

Birth data:

Using this data - real births from BirthTracks.

Review:

1. Create a new column for pounds (look up conversion between pounds and grams).
2. Find the mean, standard deviation of this sample of births.
3. Find the mean, standard deviation of this sample of boy births.
4. Find the mean, standard deviation of this sample of girl births

Lets look at just boys.

Find the Measures of position:

1. Find the percentile of the following birth weights
   1. 9.2
   2. 5.5
   3. 7
   4. 10.5
2. Find what weight would match the following percentile:
   1. 50%
   2. 68%
   3. 90%
   4. 25%
3. Find the relative position of the following birth weights:
   1. 9.2
   2. 5.5
   3. 7
   4. 10
4. Find the weight that would match up to a relative position of:
   1. -1
   2. 1
   3. -2
   4. 2
   5. 0