2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt Mean, Median, Mode and Range Box and Whisker Plots Stem and Leaf Plots Histograms Analyzing Data

What is the lower quartile for this set of data? A. 50 B.91 C.130 D.157 E.210

The lower quartile is (B) 91 A. 50 B.91 C.130 D.157 E.210

What is the mode number of pets in this set of data? frequency

The mode for this set of data is 1 pet. There were four students that only had one(1) pet.

What is the range of pets for this set of data?

The range is the difference between the highest number and the lowest number = 14 The range is 14.

The following were Janelle’s 8 quiz scores: Janelle thought her median was 26 Jimmy thought her median was 26.5 And June thought her median was 27 Who was right, and why?

The following were Janelle’s 8 quiz scores: The median splits the data exactly in half. If you put four(4) numbers on each side of the median, it would be in- between 26 and 27. Jimmy was right, the median is 26.5

What is the sum of the mean, median, and mode for the following set of data?

What is the sum of the mean, median, and mode for the following set of data? Mean = 50 ÷ 5 =10 Median =11 Mode =15 Sum = 36

Approximately what is the range of weekly incomes? A. $130 B.$70 C.$120 D.$160 E.$190

(C) = $120

Quiz Scores What are the values of the outliers?

Quiz Scores Outliers are pieces of data that are significantly bigger or significantly smaller than the majority of the data. The two outliers are 9 and 10 for the 2nd period class.

Quiz Scores Which two class periods have identical upper quartiles?

Quiz Scores 1st period and 2nd period have identical upper quartiles of 18.5.

If the median for this set of data is 83.5, what is the lower quartile?

There are 6 data points below the median. The lower quartile is between the 3rd point (75) and the 4th point (79). The LQ is LQ = 77 median

Quiz Scores What is the reason why 5th period doesn’t have an upper whisker?

Quiz Scores The reason why the upper whisker seems to have disappeared is that all scores in that whisker are the same value as the upper quartile (20).

How many students were surveyed in this poll?

13

What is the median for this set of data?

There are 22 pieces of data. If you count in 11 from both ends, you will end up with 2 middle numbers, 15 and 17. Half way between them is the median, 16.

How many students live more than 10 miles from school?

9 students live more than 10 miles from school?

What is the upper quartile for this set of data?

The upper quartile is 21. median Upper quartile

What is the range for this set of data? Weekly Salaries

By using the key, you can see that the maximum salary is $197 and the minimum salary is $100. The salary range is $197 - $100 = $97. Weekly Salaries

How many students scored 85% or higher on the semester test?

= 27

How many students scored between 14 and 18 on the proportions/ rates quiz?

= 38

When doing homework, which category contained exactly 15 students? Number of Minutes Spent on Homework How many minutes students spend on homework

Number of Minutes Spent on Homework How many minutes students spend on homework 15 Students spent 200 to 240 minutes studying homework.

How many students took the semester test?

= 100

Quickly sketch in the histogram for the data in the chart

Plane Flights There are 96 plane flights in this set of data. How many flights are above the median?

Half of the flights are above the median. Therefore half of 96 flights are above the median. Half of 96 is 48. There are 48 flights above the median.

Which colored plane shows the most consistent flights?

The Salmon plane has the smallest range. If you ignored the outliers, the Green plane would have been the most consistent.

Students’ Swimming During June There are 3 distinct clusters of information in this line plot. Give the range of each “cluster”.

Students’ Swimming During June The clusters of information are: 1 to 4 8 to to 20 } } }

The upper quartile for this set of data is 21. If there are 40 students in this class, how many students scored above 21 on the quiz?

Each section on a box plot contains 1/4 of the data. 1/4 of 40 is ten. Therefore there are 10 students who scored above the upper quartile of students

Plane Flights What percent of the data is above the lower quartile?

A box plot is divided into 4 equal sections. Each section contains 25% of the data. Therefore 75% of the data is located above the lower quartile.