Statistic Review

What was the HIGHEST test grade of the class, based on the histogram?

• Cannot be determined

• 96

• 100

• 99

What is the median shown on the dot plot?

• 3.5

• 4

• 7

According to the graph, how many students scored at most and 80 on the test?

• 6

• 3

• 19

• Cannot be determined

Which would be the best way for Suffern Middle School to gather the most representative sample (unbiased) to decide whether to go to the Liberty Science Center, Museum of Natural History, or to a Baseball Game on the 6th grade trip this year

• Ask every 5th student entering the building at the beginning of the day

• Ask the first 30 student entering the lunchroom during 6th grade lunch

• Ask every student during their 6th grade science class

• Send a survey to every 6th grade students playing modified sports

Which graph shows greater variability?

• Graph A

• Graph B

• The variability is the same for both graphs

A PEAK in a set of data is most associated with which measure of central tendency?

• Mean

• Median

• Mode

Which measure or measures of central tendency is ALWAYS a number in the set?

• Mean ONLY

• Mean and Median

• Mode ONLY

• Median and Mode

12 is the Maximum Value represented on this graph

• True

• False

True or False
The interquartile range is the difference between the upper quartile (Q3) and the lower quartile (Q1).

• True

• False

What is the mode of the scores?

• 24

• 14

• 34

• 30