The number or numbers that occur most often in a data set is called the __________.
Mode
Find the mode of the data set:
14, 16, 15, 17, 16, 12
16
Determine the mode of the date set:
2
Provide a “Statistical Question” that you could use to survey the class for a data project.
Answers will vary.
What can you put in a bucket and make it weigh less?
A hole
The middle number when the numbers of a data set are ordered from least to greatest is called the ____________.
Median
Find the median of the data set:
14, 16, 15, 17, 16, 12
15.5
Determine the mean of the data set:
2.25
Which measure of center is usually described as a data set’s “Average”?
When asked to find the average, we are usually describing the "MEAN" of the data set.
What kind of running also means walking?
Running out of gas
The sum of the numbers of a data set divided by the number of data items is called the ______________.
Mean
Find the mean of the data set:
22, 13, 47, 11, 8, 16, 15, 14, 13, 17
17.6
Estimate the median quiz score.
62-65 would be acceptable answers
The Urbana Hillclimbers’ hitting stats are listed. Which measure of center most accurately provides the typical number of home runs hit by a Hillclimber player?
Crew: 3, Drew: 1, Roman: 2, Braxten: 1, Case: 52, Bryce: 4
Median would be most accurate, as the number of home runs hit by Case would represent an outlier. Outliers skew the data when we use the mean to describe our answer.
What has a bottom at the top
Your legs
A data point that is markedly lesser or greater than the other data points. This will have an influence on the central tendencies of the data.
Outlier
The states that border the Gulf of Mexico are: Alabama, Florida, Texas, Mississippi, and Louisiana. What is the mean for the number of letters in those states' names?
7.8
Estimate the Range of the Data Set.
70-75 would be acceptable answers
Coach Petty looks at the stats of his best hitters. Coach Petty proudly proclaims that he is an awesome coach because the typical Hillclimber batter hits 10.5 home runs. What is not accurate about Coach Petty’s statement?
Crew: 3, Drew: 1, Roman: 2, Braxten: 1, Case: 52, Bryce: 4
Coach Petty used the "mean" to describe his typical hitter. It is not true that the typical player hit 10.5 home runs. This number is too high because Case slugged 52 home runs, which is an outlier.
How far can a bear enter the woods?
Halfway. After he gets to the halfway point, he is running out of the woods.
Define “Statistical Question.”
A question in which you expect answers to vary. The most useful statistical questions also require numerical answers.
Bella scored a 95%, 87%, 78%, and 92% on the first 4 tests of the quarter. What score does Bella need to earn on her 5th test to have a 90% average?
Bella needs to score 98% on the last test to have a 90% average.
Identify the Lower (1st) Quartile and Upper (3rd) Quartile from the graph.
Lower: 30 Upper: 70
Describe the Shape and Distribution of the Data Set:
The data is not symmetrical. The data set would be skewed to the right or positively skewed.
If you drop me I’m sure to crack, but give me a grin and I’ll always grin back. What am I?