Frequency Data

Lake samples are taken from around the country to assess the nitrate levels in the water. The levels, in parts per million, are given in the frequency distribution table adjacent.

The mean will be ​ (a)   the median because the data are ​ (b)   .

• higher than

• positively skewed

• lower than

• equal to

• negatively skewed

• approximately symmetric

• uniform

Lake samples are taken from around the country to assess the nitrate levels in the water. The levels, in parts per million, are given in the frequency distribution table adjacent.

The range of the data is

• 9

• 11

• Unable to be determined from the frequency table.

• 43

For the adjacent frequency distribution table, the class intervals will each have a width of what size?

(a)  

The lengths of rivers in a state are given adjacent.

The mean river length is

• 556.25 kms

• 580.15 kms

• 602.40 kms

• 830. 830.56 kms

Identify the three mistakes in the frequency distribution table.

Anything highlighted in green as verified as correct already.

Lake samples are taken from around the country to assess the nitrate levels in the water. The levels, in parts per million, are given in the frequency distribution table adjacent.

The modal class is

• 0 - < 3

• 3 - < 5

• 5 - < 7

• 7 - < 9

According to the portion of the frequency table given, how many people have an MBA?

• 9

• 20

• 60

• not enough information

What is the range of the data set?

• 4

• 3

• 2

• 1

Using the table, what is the value of Q₁?

• 22

• 22.5

• 22.7

• 23

What is the cumulative frequency of the median class in this distribution?

• 14

• 15

• 24

• 9