Statistics - Univariate Data

Calculate the MEAN for the data set: 6, 7, 12, 8, 7, 4, 8, 8, 7

• 7

• 7.44

• 8

• 7 and 8

Calculate the MEDIAN for the data set: 6, 7, 12, 8, 7, 4, 8, 8, 7

• 7

• 7.44

• 8

• 7 and 8

Calculate the MODE for the data set: 6, 7, 12, 8, 7, 4, 8, 8, 7

• 7

• 7.44

• 8

• 7 and 8

Calculate the RANGE for the data set: 6, 7, 12, 8, 7, 4, 8, 8, 7

• 7

• 7.44

• 8

• 7 and 8

Calculate the relative frequency of having an IQ score in the 131-140 range. (200 7th graders were surveyed).

• 8%

• 4%

• 20%

• 15.5%

How many 7th graders had an IQ score in the 81-90 range?

• 13

• 6.5

• 3

• 42

How many data points are greater than 34?

• 10

• 11

• 12

• 13

Calculate the 5 number summary for the following data. You may use your graphing calculator.

• 1791, 3162, 6163, 8578, 9400

• 1791, 3815, 6472, 8924.5, 9400

• 6197.44

• 7609

Find the Inter-Quartile Range (IQR). You may use your graphing calculator.

• 7609

• 8924.5

• 2708

• 5416

Owen was asked to write down the number of pull-ups that 7 of his classmates could do. He wrote down: 3, 2, high, low, 6, 1, 8. Owen said that "high" was greater than 6 and "low" was less than 2. Find the median.

• 2

• 3

• 2.5

• Cannot be determined.