Consider the following data representing the price of plasma televisions (in dol
ID: 3074502 • Letter: C
Question
Consider the following data representing the price of plasma televisions (in dollars). 1403 1316 1163 1271 1346 1467 1304 271 1438 1436 1176 1155 1291 1375 Class 1056-I125 Frequency Class Boundaries Midpoint Relative Frequency Cumulative Freguency 126-I195 1196-1265 1266-1335 1336-140 1406-1475 (1 Points) Step I. Determine the class width of the data given. (1 Points) Step 2. Determine the frequency of the third class. (1 Points) Step 3. Determine the lower class boundary for the sixth class. Step 4. Determine the upper class boundary for the first class. ( Points) ContinucExplanation / Answer
Step1
To find the class width we need to subtract upper class from lower class i.e 1125 - 1056 = 69
Step 2 Determine the frequency of the third class
Frequency can be calculate by count the number of values in the data set which falls within the lower class limit and upper class limit
The frequency of the third class is 1
Step 3 Determine the class boundaries for the sixth class
Class boundaries can be calculate by subtracting 0.5 in lower class limit for each class and adding 0.5 in upper class limit for each class.
So, lower class boundaries for the sixth class is 1405.5
Step 4 Determine the upper clas boundaries for the first class
Lower class boundaries is 1055.5
Upper class boundaries is 1125.5
Step 5 Midpoint of the fifth class
Midpoint can be calculate by ( lower class limit + upper class limit ) / 2
Midpoint of the fifth class is 1370.5
Step 6 Relative frequency fo the first class
Relative frequency can be calculate by frequency of particular class / sum of frequencies
Relative frequency of the first class is 0.04762
Step 7 Cumulative frequency of the sixth class
Cumulative frequency = Adding up the class frequency with the preceding cumulative frequency gives us cumulative frequency
Cumulative frequency of sixth class is 21
Lower Class Upper Class Class Width 1056 1125 69 (1125 - 1056) 1126 1195 69 (1195 - 1126) 1196 1265 69 (1265 - 1196) 1266 1335 69 (1335 - 1266) 1336 1405 69 (1405 - 1336) 1406 1475 69 (1475 - 1406)