Statistical Question
What is the eye color of 6th grade students?
Yes, statistical
Find the mean of the data:
49, 62, 52, 54, 61, 70, 55, 53
Mean = 57
What is the median?
The middle value
What is the mode of a data set?
The mode is the value or values that occur most often or repeat.
In Statistics, what is a measure of center?
A measure of center describes the typical value of a data set.
The mean, median, and mode are measures of center.
How many inches are in a foot?
No, not statistical
How do you find the mean of a data set?
In order to find the mean of a data set, you first add all the data values. Then, you divide the sum by the total number of data values.
How do you find the median?
Data set with even number of values?
Data set with odd number of values?
The median is the middle value once the data values are in order from least to greatest.
Even number of values: Find the mean of the two middle values.
Odd number of values: The middle number is the median
True or False:
It is possible for a data set to have NO MODE.
True.
What is an outlier?
An outlier is a data value that is much higher or much lower than the rest of the data values in the set.
How many pages are in the favorite books of students your age?
Yes, statistical
True or False:
An outlier changes the mean of a data set.
True
Find the median:
20, 4, 17, 8, 12, 9, 5, 20, 13
True or False:
It is possible for a data set to have more than one mode.
True.
Describe a cluster, peak, and gap.
How many hours do 6th graders spend playing video games each week?
Yes, statistical.... and TOO MANY!
Find the mean:
7.2, 8.5, 7.0, 8.1, 6.7
Mean = 7.5
Find the median:
100, 75, 90, 80, 110, 102
Median = 95
Find the mode of the data set:
20, 4, 17, 8, 12, 9, 5, 20, 13
Mode = 20
No, not statistical
Find the mean with and without the OUTLIER. Then, describe how the outlier affects the mean.
Weights (in pounds) of dogs in an animal shelter:
48, 50, 55, 60, 8, 37, 50
Outlier = 8
Mean with the outlier: 44 pounds
Mean without the outlier: 50 pounds
The outlier makes the mean less than all but two of the weights.
Find the mean and median of the data:
1, 93, 46, 48, 34, 194, 67, 55
Which measure best represents the data?
Mean: 67.25
Median: 51.5
The median best represents the data because it is closer to more of the data because the mean is influenced by outliers.
96, 150, 102, 87, 150, 75
Median = 99
Mode = 150
The median best represents the data because the mode is the greatest value and the mean is also greater than most of the data values.