A1H Module #2 Review (Statistics)

Find the Inter-Quartile Range (IQR). You may use your graphing calculator.

• 7609

• 8924.5

• 2708

• 5416

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

The mean of this data set is 17.8. What would happen to the mean if 40 was added to the data set?

• The mean would not change

• The mean would go up

• The mean would go down

Tags

CCSS.HSF-LE.A.1B

Which class has the higher median?

• 1st period

• 2nd period

• They have the same median

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.B.5

Based on the scatterplot, which of the following conclusions about the relationship between her height and weight is true? 

• There is a negative relationship between height and weight
• There is a positive relationship between height and weight
• There is a constant relationship between height and weight
• There is no relationship between height and weight

Tags

CCSS.6.EE.C.9

CCSS.6.SP.A.2

CCSS.6.SP.B.4

If 44 values were used for the data, about how many data values are greater than the 1st quartile?

• 11
• 22
• 33
• 128

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

True or False: 75% of the data values are greater than 18?

• True

• False, 75% of the values are greater than 16

• False, 50 % of the values are greater than 18

• False, 25% of the values are greater than 18

What does the standard deviation tell us about the data set?

• How spread out the numbers are

• How much each number in the data set increases by

• How much each number in the data set decreases by

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Which of the following stats is incorrect?

70, 87, 93, 95, 82, 94

• mean: 86.83

• standard deviation: 8.78

• IQR: 12

• median: 94

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Which of the following sets of data is likely to have the smallest standard deviation?

• 1, 2, 4, 6, 9, 12

• 3, 3, 3, 4, 4, 5

• 0, 5, 8, 12, 15, 22

• not enough information

The number of text messages sent per day are as follows:

148, 148, 110, 84, 101, 122, 100, 90, 110, 118, 60, 104, 198, 142

Find the reasonable range (using the formula) and determine if there are any outliers.

• 79 - 164; outliers: 60, 198

• 58 - 188; outlier: 198

• 37 - 205 ; no outliers

• 62 - 200: outliers: 60