MEAN, MEDIAN AND MODE

Kayte took a sample of 50 pieces of data.  She added up all of the pieces of data and then divided by 50.  What measure of center is she working on?

• Mean
• Median
• Mode
• Range

Tags

CCSS.6.SP.A.3

This statistical number is the middle number of the data set.

• Mean
• Median
• Mode
• Range

Tags

CCSS.6.SP.B.5C

10, 20, 30, 30, 35, 44, 50
If I add 10 to each piece of data to make a new data set,
(20, 30, 40, 40, 45, 54, 60)
which stat calculation will NOT change?

• Mean
• Median
• Mode
• Range

Which set of data has a higher mean?
BOB:  1.3, 3.1, 4.1, 2.5, 2.2,  2.8
MEGAN: 5.5, 1.1, 1.2, 2.4, 3.8, 2.0, 1.9

• BOB > MEGAN
• BOB < MEGAN
• BOB=MEGAN

Tags

CCSS.6.SP.B.5C

What is an outlier?

• A value that is much less or much greater than the other values in a data set.
• The difference between the upper and lower quartiles of a data set.
• The mean of the distances from each data value in a set to the mean of a set.
• The difference between the greatest and least numbers in a data set.

The mode score on the 9th grade math test was 94! Which of these interpretations must be correct?

• 99 was the highest score on the test.
• More students received a 94 than any other score
• No student scored below a 50
• A score of 91 was slightly below average.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Madison has test scores of 93, 82, 86, and 75. What must she score on her next test to have an average of 86?

• 94
• 90
• 86
• 88

Tags

CCSS.7.EE.B.3

To find the ______ you put all numbers in order from least to greatest and then take the largest number minus the smallest number.

• Mean
• Median
• Mode
• Range

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

The number of cookies that were made at a bakery for each of seven days is shown:
108, 96, 96, 84, 108, 240, and 84
The best measure of center for this data set is the-

• median because 240 is much higher than the other numbers in the data set
• median because all of the values are close to one another in value 
• mean because 240 is much higher than the other numbers in the data set 
• mean because all of the values are close to one another in value

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

In which of the following situations would the mean be an appropriate measure of central tendency?
I. when the data set contains no outliers
II. when using categorical data
III. when an exact average is needed
IV. when the middle value is needed 

• II and III only
• I and III only 
• I, III, and IV only
• All of the above

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2