can someone please explain how to get over the error message "using excel, i am getting error message "Anova: Single Factor - input range contains non-numeric data" How do i get over error?"

please detailed your instruction

Refer to the bus data (a) and (b) respectively.

a. Conduct a test of hypothesis to reveal whether the mean maintenance cost is equal for each of the bus manufacturers. Use the .01 significance level.

using excel, i am getting error message "Anova: Single Factor - input range contains non-numeric data"

How do i get over this?

b. Conduct a test of hypothesis to determine whether the mean miles traveled since the last maintenance is equal for each bus manufacturer. Use the .05 significance level.

using excel, i am getting error message "Anova: Single Factor - input range contains non-numeric data"

How do i get over this?

Maintenance Question A Manufacturer Cost Keiser 1646 Thompson 1072 Bluebird 9394 Keiser 1078 Bluebird 1008 Bluebird 5329 Bluebird 4794 Keiser 3952 Bluebird 3742 Bluebird 4376 Bluebird 4832 Bluebird 5160 Bluebird 1955 Bluebird 2775 Bluebird 5352 Keiser 3065 Keiser 3143 Bluebird 1569 Keiser 7766 Bluebird 3743 Bluebird 2540 Keiser 4342 Keiser 3361 Keiser Bluebird 326 Bluebird 4218 Bluebird 2028 Bluebird 5821 Bluebird 9069 Bluebird 3011 Keiser 9193 Keiser 4795 Bluebird 505 Bluebird 2732 Keiser 3754 Keiser 1640 Keiser 8410 Thompson 5922 Bluebird 4364 Bluebird 3190 Bluebird 3213 Keiser 4139 Bluebird 3560 Thompson 3920 Thompson 6733 Bluebird 3770 Bluebird 5168 Keiser 7380 Bluebird 3656 Bluebird 6213 Keiser 4279 Bluebird 10575 Thompson 4752 Bluebird 3809 Bluebird 3769 Keiser 2152 Keiser 2985 Bluebird 4563 Keiser 4723 Bluebird 1826 Bluebird 1061 Keiser 3527 Bluebird 9669 Keiser 2116 Thompson 6212 Keiser 6927 Bluebird 1881 Thompson 7004 Bluebird 5284 Bluebird 3173 Bluebird 10133 Bluebird 2356 Keiser 3124 Keiser 5976 Thompson 5408 Bluebird 3690 Bluebird 9573 Bluebird 2470 Bluebird 6863 Bluebird 4513Maintenance Miles Cost Manufacturer 11973 4646 Keiser 11969 1072 Thompson 11967 9394 Bluebird 11948 1078 Keiser 11925 1008 Bluebird 11922 5329 Bluebird 11896 4794 Bluebird 11889 Keiser 11837 3742 Bluebird 11814 4376 Bluebird 11800 4832 Bluebird 11798 5160 Bluebird 11789 1955 Bluebird 11782 2775 Bluebird 11781 5352 Bluebird 11778 3065 Keiser 11757 3143 Keiser 11707 1569 Bluebird 11704 7766 Keiser 11698 3743 Bluebird 11698 2540 Bluebird 11691 4342 Keiser 11668 3361 Keiser 11662 3097 Keiser 11615 8263 Bluebird 11610 4218 Bluebird 11576 2028 Bluebird 11533 5821 Bluebird 11518 9069 Bluebird 11462 3011 Bluebird 11461 919 Keiser 11418 4795 Keiser 11359 505 Bluebird 11358 2732 Bluebird 11344 3754 Keiser 11342 4640 Keiser 11336 8410 Keiser 11248 5922 Thompson 11231 4364 Bluebird 11222 3190 Bluebird 11168 3213 Bluebird 11148 4139 Keiser 11127 3560 Bluebird 11112 3920 Thompson 11100 6733 Thompson 11048 3770 Bluebird 11018 5168 Bluebird 11003 7380 Keiser 10945 3656 Bluebird 10911 6213 Bluebird 10902 1279 Keiser 10802 10575 Bluebird 10802 4752 Thompson 10760 3809 Bluebird 10759 3769 Bluebird 10755 2152 Keiser 10726 2985 Keiser 10724 4563 Bluebird 10674 4723 Keiser 10662 1826 Bluebird 10633 1061 Bluebird 10591 3527 Keiser 10551 9669 Bluebird 10518 2116 Keiser 10473 6212 Thompson 10355 6927 Keiser 10344 1881 Bluebird 10315 7004 Thompson 10235 5284 Bluebird 10227 3173 Bluebird 10210 10133 Bluebird 10209 2356 Bluebird 10167 3124 Keiser 10140 5976 Keiser 10128 5408 Thompson 10095 3690 Bluebird 10081 9573 Bluebird 10075 2470 Bluebird 10055 6863 Bluebird 10000 4513 Bluebird