math 225N week 2
1. Question AgeFrequency
The frequency table below shows the ages of the stu- RelativeFrequency
dents in a psychology lecture hall. 1799120=0.075181818120=
Complete the Relative Frequency column of the table.
Enter answers as an unsimplified fraction.
Provide your answer below:
Age. 17 18 19 20 21 22
Frequency. 9 18 27 30 21 15
Relative Frequency
2. Question Dividing each frequency
The relative frequencies for a set of data are shown in by the total number of data
the table below. values gives the relative
ValueRelative Frequency10.1520.3030.4540.10 frequency. Multiplying the
If there are a total of 40 data values, with what frequen- relative frequency by the
cy does the data value 1 occur? total number of data val-
Provide your answer below: ues gives the frequency.
The data value 1 oc-
curs with relative frequen-
cy 0.15 in a data set of
40 values, the frequen-
cy of the data value 1
is0.15(40)=6.
The data value 1 occurs 6
times.
3. Given the relative frequency table below, which of the Answer Explanation
following is the corresponding cumulative relative fre- Correct answer:
quency table? Value:2 3 4 5.
Value cuulative relative frequen-
Relative Frequency cy: 0.23 0.56 0.8 1
2 Remember that a cumula-
, math 225N week 2
0.23 tive frequency table adds
3 the relative frequencies for
0.33 the previous entries in
4 the table. For example,
0.24 the entry for the value 4
5 is0.23+0.33+0.24=0.8
0.2
Select the correct answer below:
Value
Cumulative relative frequency
20.2330.5640.851
Value
Cumulative relative frequency
20.2330.4640.851
Value
Cumulative relative frequency
20.3330.5640.851
Value
Cumulative relative frequency
20.1330.5640.851
4. Question Lower Class LimitUpper
As the manager of a store, you wish to determine the Class
amount of money that people who visit this store are LimitFrequen-
willing to spend on impulse buys on products placed cy164712413187192412530
near the checkout register. You sample twenty individ-
uals and records their responses. Construct a frequen-
cy table for grouped data using five classes.
8,18,15,10,29,4,15,2,4,9,16,14,13,8,25,25,27,1,15,24
5. Question To determine the class
William wishes to view a frequency table for grouped width, use the formula:
1. Question AgeFrequency
The frequency table below shows the ages of the stu- RelativeFrequency
dents in a psychology lecture hall. 1799120=0.075181818120=
Complete the Relative Frequency column of the table.
Enter answers as an unsimplified fraction.
Provide your answer below:
Age. 17 18 19 20 21 22
Frequency. 9 18 27 30 21 15
Relative Frequency
2. Question Dividing each frequency
The relative frequencies for a set of data are shown in by the total number of data
the table below. values gives the relative
ValueRelative Frequency10.1520.3030.4540.10 frequency. Multiplying the
If there are a total of 40 data values, with what frequen- relative frequency by the
cy does the data value 1 occur? total number of data val-
Provide your answer below: ues gives the frequency.
The data value 1 oc-
curs with relative frequen-
cy 0.15 in a data set of
40 values, the frequen-
cy of the data value 1
is0.15(40)=6.
The data value 1 occurs 6
times.
3. Given the relative frequency table below, which of the Answer Explanation
following is the corresponding cumulative relative fre- Correct answer:
quency table? Value:2 3 4 5.
Value cuulative relative frequen-
Relative Frequency cy: 0.23 0.56 0.8 1
2 Remember that a cumula-
, math 225N week 2
0.23 tive frequency table adds
3 the relative frequencies for
0.33 the previous entries in
4 the table. For example,
0.24 the entry for the value 4
5 is0.23+0.33+0.24=0.8
0.2
Select the correct answer below:
Value
Cumulative relative frequency
20.2330.5640.851
Value
Cumulative relative frequency
20.2330.4640.851
Value
Cumulative relative frequency
20.3330.5640.851
Value
Cumulative relative frequency
20.1330.5640.851
4. Question Lower Class LimitUpper
As the manager of a store, you wish to determine the Class
amount of money that people who visit this store are LimitFrequen-
willing to spend on impulse buys on products placed cy164712413187192412530
near the checkout register. You sample twenty individ-
uals and records their responses. Construct a frequen-
cy table for grouped data using five classes.
8,18,15,10,29,4,15,2,4,9,16,14,13,8,25,25,27,1,15,24
5. Question To determine the class
William wishes to view a frequency table for grouped width, use the formula:
