Here is a data set summarized as a stem-and-leaf plot:
3 | 00024677779 |
4 | 0003445677888899 |
5 | 04456 |
6 | 669 |
How many data values are in this data set? n=n=
What is the minimum value in the last class?
What is the minimum value in the entire sample?
How many of the original values are greater than 40?
The test scores for two algebra classes are shown in the Stem and Leaf below.
Test Scores | ||
Period 9 | Period 10 | |
9 8 2 0 | 5 | 8 |
9 4 2 | 6 | 4 8 |
8 7 2 1 | 7 | 0 1 6 |
8 6 | 8 | 3 6 8 |
8 4 1 | 9 | 3 5 6 7 |
10 | 0 0 |
Key: |2|3 = 23%
1|2| = 21%
A) How many students scored a 100%?
B) How many students in 9th period scored 80% or
more?
C) What was the lowest score in period 10?
D) Which period had more students take the test Select an answer
Period 9 Period 10
Here is a data set:
86 | 55 | 57 | 64 | 78 |
86 | 76 | 77 | 68 | 79 |
60 | 86 | 67 | 61 | 68 |
63 | 69 | 66 | 58 | 64 |
65 | 54 | 77 | 58 | 64 |
53 | 65 | 67 | 56 | 58 |
You are examining the data with a stem-and-leaf plot. Here is
the start of the plot. Finish the plot.
5# | 34567888
6# | 01344455677889
7# | 67789
8# |
Here is a data set:
10 | 23 | 23 | 19 | 24 |
35 | 18 | 25 | 12 | 48 |
32 | 23 | 10 | 23 | 25 |
49 | 21 | 25 | 38 | 31 |
26 | 31 | 24 | 11 | 46 |
15 | 27 | 11 | 22 | 26 |
You are examining the data with a stem-and-leaf plot. Here is
the start of the plot. Finish the plot.
1# | 00112589
2# | 12333344555667
3# | 11258
4# |
During one shift, the express lane clerk recorded how many times
customers violated the "10 items or less" rule for his lane. In
particular, he recorded how many items over the limit each violator
placed on the conveyor belt. This data is summarized in the
histogram below. NOTE: The last class actually represents "7 or
more items," not just 7 items.
2468101214# items over 100.51.52.53.54.55.56.57.5Frequency
What is the frequency of times the limit was exceeded by 4
items?
Answer: times
There are total 35 leafs so number of data values in the stam and leaf plot is
n = 35
The minimum stem is 3 and 0 is first leaf of stem 3 so minimum value is 30.
The maximum stem is 6 and 9 is last leaf of stem 6 so maximum value is 69.
Out of 35 data values, 21 are greater than 40.
---------------------------------------------------------------
A)
2 students in period 10
B)
In period 9 , stems 8 and 9 have 5 leaves so 5 students scored 80% or more.
C)
58%
D)
Period 9 has 16 leaves and period 10 has 15 leaves so period 9 has more students.
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